INSMED Inc (INSM) stock
INSMNasdaqPharmaceutical PreparationsFiscal year ends December 31
Financials through Q3 FY2026, quarter ended Sep 30, 2026Last filing: 10-Q on Oct 29, 2026Score 8/3083% above fair value
$112.58+0.99 (+0.89%)
Close on Oct 30, 2026Market cap $24.59BP/E –Yield –
Price history
Insmed share prices for every trading day, newest first. Adjusted for stock splits, not for dividends.
Close, Oct 30, 2026
$112.58
+0.89% on the day
52-week range
$90.39 – $212.75
-47.1% from the high
Change over 52 weeks
-42.0%
From $194.22 on Oct 30, 2025
Average volume
2.84M
Shares a day, last 90 sessions
| Date | Open | High | Low | Close | Change | Volume |
|---|---|---|---|---|---|---|
| Oct 30, 2026 | $113.60 | $116.37 | $111.97 | $112.58 | +0.89% | 5,184,538 |
| Oct 29, 2026 | $110.00 | $114.51 | $103.78 | $111.59 | +15.06% | 11,220,670 |
| Oct 28, 2026 | $94.01 | $97.92 | $93.86 | $96.98 | +2.13% | 4,648,668 |
| Oct 27, 2026 | $93.33 | $96.37 | $92.87 | $94.96 | +1.75% | 3,349,378 |
| Oct 26, 2026 | $93.44 | $94.34 | $92.96 | $93.33 | -0.06% | 3,379,924 |
| Oct 23, 2026 | $94.12 | $94.64 | $92.63 | $93.39 | -1.76% | 3,414,134 |
| Oct 22, 2026 | $93.50 | $95.59 | $93.33 | $95.06 | +1.08% | 3,099,798 |
| Oct 21, 2026 | $95.08 | $97.09 | $93.80 | $94.04 | -1.70% | 2,970,356 |
| Oct 20, 2026 | $95.44 | $97.20 | $94.60 | $95.67 | +0.40% | 2,612,666 |
| Oct 19, 2026 | $96.27 | $97.88 | $94.38 | $95.29 | -1.02% | 2,723,597 |
| Oct 16, 2026 | $98.70 | $99.00 | $96.05 | $96.27 | -2.96% | 2,396,655 |
| Oct 15, 2026 | $99.26 | $100.72 | $97.90 | $99.21 | +1.45% | 3,346,618 |
| Oct 14, 2026 | $97.39 | $98.00 | $95.76 | $97.79 | +1.03% | 2,737,092 |
| Oct 13, 2026 | $98.18 | $99.73 | $96.54 | $96.79 | -1.80% | 2,161,204 |
| Oct 12, 2026 | $98.82 | $100.31 | $98.33 | $98.56 | -2.03% | 1,696,056 |
| Oct 9, 2026 | $100.52 | $101.82 | $99.15 | $100.60 | +0.12% | 2,474,342 |
| Oct 8, 2026 | $100.66 | $101.06 | $96.68 | $100.48 | -1.24% | 5,251,782 |
| Oct 7, 2026 | $103.87 | $104.80 | $101.60 | $101.74 | -3.32% | 3,164,309 |
| Oct 6, 2026 | $103.97 | $107.87 | $101.32 | $105.23 | +1.35% | 3,686,126 |
| Oct 5, 2026 | $105.50 | $108.75 | $101.65 | $103.83 | -6.56% | 5,395,743 |
| Oct 2, 2026 | $107.76 | $111.54 | $105.68 | $111.12 | +2.33% | 4,136,266 |
| Oct 1, 2026 | $114.68 | $116.19 | $108.48 | $108.59 | -4.86% | 2,646,512 |
| Sep 30, 2026 | $115.65 | $116.43 | $113.60 | $114.14 | -1.29% | 2,870,338 |
| Sep 29, 2026 | $117.06 | $118.50 | $114.49 | $115.63 | -1.73% | 1,668,367 |
| Sep 28, 2026 | $116.83 | $119.32 | $116.31 | $117.67 | -0.14% | 1,744,370 |
| Sep 25, 2026 | $121.87 | $122.90 | $115.87 | $117.83 | -3.06% | 2,672,745 |
| Sep 24, 2026 | $119.26 | $121.69 | $118.38 | $121.55 | +2.71% | 2,233,624 |
| Sep 23, 2026 | $121.58 | $122.65 | $116.74 | $118.34 | -2.05% | 1,921,655 |
| Sep 22, 2026 | $121.00 | $122.48 | $119.09 | $120.82 | -0.15% | 2,405,270 |
| Sep 21, 2026 | $123.06 | $124.48 | $120.92 | $121.00 | +0.83% | 1,812,278 |
| Sep 18, 2026 | $123.89 | $124.11 | $119.32 | $120.00 | -3.21% | 3,445,007 |
| Sep 17, 2026 | $124.16 | $127.40 | $122.88 | $123.98 | +1.14% | 1,592,254 |
| Sep 16, 2026 | $120.00 | $124.41 | $119.55 | $122.58 | +2.22% | 1,434,017 |
| Sep 15, 2026 | $126.10 | $126.10 | $118.34 | $119.92 | -4.29% | 3,364,508 |
| Sep 14, 2026 | $129.50 | $130.78 | $124.58 | $125.30 | -3.18% | 1,610,741 |
| Sep 11, 2026 | $127.98 | $130.25 | $126.52 | $129.41 | +1.67% | 1,698,268 |
| Sep 10, 2026 | $127.22 | $128.85 | $124.29 | $127.28 | -1.18% | 2,594,791 |
| Sep 9, 2026 | $124.00 | $130.83 | $121.04 | $128.80 | +3.13% | 2,841,960 |
| Sep 8, 2026 | $124.78 | $127.42 | $121.38 | $124.89 | -1.11% | 1,605,099 |
| Sep 4, 2026 | $126.00 | $128.24 | $125.62 | $126.29 | -0.31% | 1,802,693 |
| Sep 3, 2026 | $126.70 | $127.09 | $124.05 | $126.68 | +0.04% | 1,885,698 |
| Sep 2, 2026 | $121.11 | $126.79 | $121.11 | $126.63 | +4.21% | 1,998,834 |
| Sep 1, 2026 | $121.95 | $122.19 | $119.52 | $121.51 | -0.25% | 1,419,286 |
| Aug 31, 2026 | $118.68 | $122.71 | $117.51 | $121.82 | +2.77% | 2,390,325 |
| Aug 28, 2026 | $120.11 | $120.66 | $117.15 | $118.54 | -2.35% | 1,977,867 |
| Aug 27, 2026 | $124.67 | $126.10 | $121.21 | $121.39 | -2.41% | 1,056,260 |
| Aug 26, 2026 | $122.89 | $125.59 | $121.64 | $124.39 | +0.40% | 1,979,984 |
| Aug 25, 2026 | $124.65 | $127.18 | $122.87 | $123.89 | -0.07% | 2,373,321 |
| Aug 24, 2026 | $125.03 | $126.11 | $122.83 | $123.98 | -1.42% | 1,341,042 |
| Aug 21, 2026 | $125.22 | $127.20 | $124.82 | $125.77 | +0.55% | 1,124,491 |
| Aug 20, 2026 | $128.36 | $130.27 | $124.60 | $125.08 | -4.27% | 1,761,850 |
| Aug 19, 2026 | $129.85 | $131.10 | $127.42 | $130.66 | +1.71% | 1,493,674 |
| Aug 18, 2026 | $128.07 | $128.93 | $126.39 | $128.46 | +0.11% | 1,274,119 |
| Aug 17, 2026 | $124.71 | $128.46 | $124.70 | $128.32 | +3.70% | 1,899,670 |
| Aug 14, 2026 | $125.67 | $126.85 | $122.21 | $123.74 | -2.05% | 1,957,324 |
| Aug 13, 2026 | $132.50 | $133.16 | $126.13 | $126.33 | -4.50% | 2,479,563 |
| Aug 12, 2026 | $132.31 | $135.26 | $130.80 | $132.28 | -0.22% | 1,563,224 |
| Aug 11, 2026 | $134.55 | $135.30 | $131.67 | $132.57 | -1.62% | 2,728,711 |
| Aug 10, 2026 | $129.98 | $135.50 | $129.50 | $134.75 | +2.78% | 3,630,056 |
| Aug 7, 2026 | $134.99 | $135.49 | $126.44 | $131.10 | -1.09% | 4,904,624 |
| Aug 6, 2026 | $128.22 | $137.70 | $126.15 | $132.55 | +33.86% | 12,036,150 |
| Aug 5, 2026 | $99.16 | $100.95 | $98.64 | $99.02 | +0.27% | 4,899,602 |
| Aug 4, 2026 | $98.98 | $99.48 | $97.86 | $98.75 | +0.30% | 4,290,804 |
| Aug 3, 2026 | $98.20 | $100.00 | $96.42 | $98.45 | -0.15% | 3,546,860 |
| Jul 31, 2026 | $101.25 | $101.91 | $97.05 | $98.60 | -2.85% | 2,902,595 |
| Jul 30, 2026 | $101.63 | $102.10 | $99.03 | $101.49 | -1.58% | 3,363,495 |
| Jul 29, 2026 | $103.98 | $106.26 | $102.81 | $103.12 | -0.97% | 2,195,533 |
| Jul 28, 2026 | $104.73 | $105.76 | $103.18 | $104.13 | -0.57% | 1,945,719 |
| Jul 27, 2026 | $106.93 | $107.37 | $104.50 | $104.73 | -2.05% | 1,899,713 |
| Jul 24, 2026 | $106.49 | $108.27 | $105.77 | $106.92 | -0.46% | 1,908,298 |
| Jul 23, 2026 | $105.80 | $107.88 | $105.09 | $107.41 | +0.72% | 1,752,962 |
| Jul 22, 2026 | $109.47 | $109.99 | $106.12 | $106.64 | -1.82% | 1,771,277 |
| Jul 21, 2026 | $107.87 | $109.42 | $106.41 | $108.62 | +1.50% | 2,447,392 |
| Jul 20, 2026 | $108.24 | $109.80 | $106.63 | $107.02 | -1.20% | 2,015,930 |
| Jul 17, 2026 | $105.20 | $110.58 | $105.20 | $108.32 | +0.80% | 2,002,884 |
| Jul 16, 2026 | $109.93 | $110.30 | $105.07 | $107.46 | -2.14% | 2,754,212 |
| Jul 15, 2026 | $111.00 | $111.60 | $108.34 | $109.81 | -0.27% | 2,116,813 |
| Jul 14, 2026 | $109.14 | $110.67 | $107.33 | $110.11 | +0.89% | 1,848,330 |
| Jul 13, 2026 | $114.25 | $115.55 | $108.02 | $109.14 | -5.60% | 2,825,240 |
| Jul 10, 2026 | $118.09 | $118.94 | $112.80 | $115.61 | -2.24% | 2,931,618 |
| Jul 9, 2026 | $116.44 | $119.54 | $116.01 | $118.26 | +1.48% | 3,167,091 |
| Jul 8, 2026 | $111.93 | $116.99 | $111.01 | $116.53 | +3.27% | 2,835,056 |
| Jul 7, 2026 | $113.21 | $114.69 | $111.47 | $112.84 | +1.17% | 1,674,721 |
| Jul 6, 2026 | $110.60 | $112.57 | $108.55 | $111.54 | -0.05% | 2,232,435 |
| Jul 2, 2026 | $107.50 | $111.92 | $107.06 | $111.60 | +4.30% | 2,771,287 |
| Jul 1, 2026 | $107.68 | $109.19 | $106.01 | $107.00 | +0.36% | 2,398,071 |
| Jun 30, 2026 | $105.84 | $108.67 | $104.64 | $106.62 | +1.79% | 3,358,466 |
| Jun 29, 2026 | $105.36 | $106.39 | $103.08 | $104.74 | +1.32% | 2,747,688 |
| Jun 26, 2026 | $105.11 | $108.14 | $102.59 | $103.38 | -1.04% | 6,259,750 |
| Jun 25, 2026 | $103.00 | $107.49 | $101.67 | $104.47 | +0.98% | 4,423,498 |
| Jun 24, 2026 | $103.40 | $107.20 | $102.31 | $103.46 | +1.28% | 3,136,887 |
| Jun 23, 2026 | $98.84 | $103.15 | $97.60 | $102.15 | +3.60% | 4,199,730 |
| Jun 22, 2026 | $95.82 | $99.88 | $95.27 | $98.61 | +2.93% | 4,257,431 |
| Jun 18, 2026 | $100.11 | $100.25 | $94.00 | $95.80 | -2.69% | 23,379,310 |
| Jun 17, 2026 | $95.18 | $99.15 | $94.22 | $98.45 | +3.07% | 3,472,922 |
| Jun 16, 2026 | $97.50 | $98.10 | $93.92 | $95.52 | -1.99% | 3,423,653 |
| Jun 15, 2026 | $98.85 | $100.17 | $97.04 | $97.46 | -0.40% | 3,788,821 |
| Jun 12, 2026 | $95.12 | $98.51 | $93.92 | $97.85 | +1.17% | 4,529,094 |
| Jun 11, 2026 | $92.30 | $98.18 | $91.37 | $96.72 | +5.27% | 5,105,563 |
| Jun 10, 2026 | $98.28 | $99.25 | $90.39 | $91.88 | -7.23% | 5,425,643 |
| Jun 9, 2026 | $95.75 | $99.55 | $95.43 | $99.04 | +5.17% | 4,240,892 |
| Jun 8, 2026 | $94.45 | $96.77 | $92.07 | $94.17 | -0.05% | 5,010,375 |
| Jun 5, 2026 | $103.78 | $105.00 | $92.81 | $94.22 | -10.20% | 7,956,669 |
| Jun 4, 2026 | $103.39 | $105.29 | $102.89 | $104.92 | +1.02% | 1,849,295 |
| Jun 3, 2026 | $102.27 | $105.20 | $101.73 | $103.86 | +0.13% | 2,978,436 |
| Jun 2, 2026 | $104.09 | $104.45 | $100.56 | $103.73 | -2.17% | 2,406,468 |
| Jun 1, 2026 | $106.09 | $106.79 | $102.81 | $106.03 | -0.82% | 3,357,738 |
| May 29, 2026 | $107.85 | $108.46 | $106.26 | $106.91 | -1.35% | 4,534,777 |
| May 28, 2026 | $106.90 | $109.95 | $106.10 | $108.37 | +1.85% | 2,231,123 |
| May 27, 2026 | $107.80 | $109.78 | $106.04 | $106.40 | -2.27% | 3,094,620 |
| May 26, 2026 | $107.82 | $109.74 | $105.00 | $108.87 | +2.48% | 2,273,664 |
| May 22, 2026 | $108.47 | $110.83 | $106.20 | $106.24 | -3.00% | 2,432,892 |
| May 21, 2026 | $107.55 | $110.96 | $106.56 | $109.53 | +1.50% | 3,689,970 |
| May 20, 2026 | $108.67 | $109.96 | $106.71 | $107.91 | +0.47% | 2,989,433 |
| May 19, 2026 | $107.81 | $109.75 | $105.01 | $107.41 | +0.24% | 3,647,485 |
| May 18, 2026 | $107.36 | $107.74 | $104.48 | $107.15 | -1.82% | 3,834,611 |
| May 15, 2026 | $114.30 | $114.51 | $108.22 | $109.14 | -5.60% | 3,688,412 |
| May 14, 2026 | $117.54 | $119.12 | $114.88 | $115.62 | -2.01% | 2,761,456 |
| May 13, 2026 | $117.50 | $122.94 | $112.00 | $117.99 | +1.72% | 6,728,279 |
| May 12, 2026 | $103.65 | $117.63 | $103.46 | $116.00 | +11.66% | 8,274,773 |
| May 11, 2026 | $100.00 | $108.20 | $98.90 | $103.89 | +2.51% | 7,898,445 |
| May 8, 2026 | $108.01 | $108.63 | $98.98 | $101.35 | -3.48% | 8,588,262 |
| May 7, 2026 | $116.91 | $125.36 | $103.50 | $105.00 | -23.41% | 13,718,250 |
| May 6, 2026 | $138.46 | $142.58 | $136.73 | $137.09 | -1.69% | 2,302,230 |
| May 5, 2026 | $140.86 | $142.90 | $138.41 | $139.44 | -0.41% | 1,238,324 |
| May 4, 2026 | $133.88 | $141.28 | $133.46 | $140.01 | +5.07% | 1,881,668 |
| May 1, 2026 | $135.65 | $137.62 | $132.39 | $133.26 | -2.25% | 1,562,478 |
| Apr 30, 2026 | $136.00 | $137.22 | $134.94 | $136.33 | +0.96% | 1,336,985 |
| Apr 29, 2026 | $134.42 | $136.98 | $132.77 | $135.03 | +0.07% | 1,487,751 |
| Apr 28, 2026 | $136.54 | $138.79 | $132.57 | $134.94 | -0.76% | 1,357,357 |
| Apr 27, 2026 | $135.58 | $139.54 | $135.18 | $135.98 | +0.60% | 1,116,792 |
| Apr 24, 2026 | $142.29 | $143.27 | $134.59 | $135.17 | -6.02% | 2,501,086 |
| Apr 23, 2026 | $144.48 | $145.43 | $142.06 | $143.83 | -0.45% | 1,152,462 |
| Apr 22, 2026 | $142.39 | $145.32 | $141.43 | $144.48 | +2.48% | 1,820,109 |
| Apr 21, 2026 | $142.42 | $144.07 | $139.59 | $140.98 | -1.29% | 1,591,216 |
| Apr 20, 2026 | $143.30 | $144.06 | $140.65 | $142.82 | -1.15% | 1,071,009 |
| Apr 17, 2026 | $144.25 | $145.62 | $143.28 | $144.48 | +1.18% | 2,048,533 |
| Apr 16, 2026 | $146.02 | $146.18 | $142.03 | $142.79 | -2.69% | 2,160,900 |
| Apr 15, 2026 | $154.57 | $154.58 | $146.25 | $146.74 | -4.34% | 2,229,207 |
| Apr 14, 2026 | $152.21 | $153.87 | $150.93 | $153.40 | +1.50% | 1,309,602 |
| Apr 13, 2026 | $154.81 | $156.64 | $148.51 | $151.14 | -2.37% | 2,079,582 |
| Apr 10, 2026 | $159.59 | $160.21 | $152.99 | $154.81 | -3.00% | 1,827,128 |
| Apr 9, 2026 | $159.15 | $160.49 | $157.75 | $159.59 | -0.37% | 1,564,153 |
| Apr 8, 2026 | $162.95 | $163.03 | $154.73 | $160.18 | -1.75% | 3,356,064 |
| Apr 7, 2026 | $162.82 | $164.03 | $159.53 | $163.03 | -0.48% | 1,352,168 |
| Apr 6, 2026 | $161.69 | $166.19 | $161.33 | $163.81 | +0.85% | 1,852,747 |
| Apr 2, 2026 | $161.51 | $164.53 | $157.52 | $162.43 | -1.47% | 1,809,386 |
| Apr 1, 2026 | $164.49 | $166.00 | $161.73 | $164.86 | +0.82% | 2,852,281 |
| Mar 31, 2026 | $153.95 | $164.22 | $153.95 | $163.52 | +6.65% | 3,673,904 |
| Mar 30, 2026 | $150.98 | $155.20 | $149.35 | $153.32 | +5.52% | 4,959,047 |
| Mar 27, 2026 | $147.98 | $149.20 | $142.59 | $145.30 | -1.56% | 3,402,260 |
| Mar 26, 2026 | $148.45 | $149.88 | $146.26 | $147.60 | -0.48% | 2,587,416 |
| Mar 25, 2026 | $140.00 | $148.86 | $139.00 | $148.31 | +6.59% | 1,987,371 |
| Mar 24, 2026 | $144.42 | $145.52 | $137.20 | $139.14 | -3.36% | 2,817,408 |
| Mar 23, 2026 | $147.12 | $149.76 | $141.64 | $143.98 | +5.87% | 4,079,400 |
| Mar 20, 2026 | $142.63 | $143.61 | $135.73 | $136.00 | -5.56% | 4,561,590 |
| Mar 19, 2026 | $144.01 | $144.88 | $141.80 | $144.00 | +0.91% | 1,952,610 |
| Mar 18, 2026 | $143.92 | $145.09 | $141.44 | $142.70 | -0.85% | 2,002,285 |
| Mar 17, 2026 | $144.50 | $147.38 | $143.59 | $143.93 | -0.46% | 2,207,941 |
| Mar 16, 2026 | $141.46 | $145.76 | $141.43 | $144.60 | +3.66% | 1,865,407 |
| Mar 13, 2026 | $140.66 | $141.78 | $138.01 | $139.50 | -0.01% | 1,480,891 |
| Mar 12, 2026 | $138.54 | $139.97 | $135.73 | $139.52 | +0.09% | 2,157,243 |
| Mar 11, 2026 | $143.02 | $144.36 | $139.05 | $139.40 | -3.09% | 1,292,644 |
| Mar 10, 2026 | $142.84 | $145.64 | $142.84 | $143.85 | +0.50% | 1,147,844 |
| Mar 9, 2026 | $139.68 | $143.74 | $138.82 | $143.13 | +2.14% | 1,802,049 |
| Mar 6, 2026 | $142.84 | $144.24 | $139.89 | $140.13 | -2.40% | 2,487,053 |
| Mar 5, 2026 | $148.04 | $148.07 | $142.04 | $143.57 | -4.21% | 2,269,846 |
| Mar 4, 2026 | $146.74 | $150.27 | $146.73 | $149.88 | +1.96% | 2,016,270 |
| Mar 3, 2026 | $145.83 | $148.31 | $143.76 | $147.00 | +0.46% | 1,937,852 |
| Mar 2, 2026 | $147.10 | $148.87 | $145.00 | $146.32 | -2.02% | 2,670,172 |
| Feb 27, 2026 | $150.00 | $151.11 | $147.57 | $149.33 | -0.45% | 2,716,543 |
| Feb 26, 2026 | $147.00 | $150.57 | $146.41 | $150.00 | +0.94% | 2,212,455 |
| Feb 25, 2026 | $159.74 | $161.13 | $148.24 | $148.61 | -6.31% | 3,209,239 |
| Feb 24, 2026 | $156.00 | $160.09 | $152.89 | $158.62 | -0.26% | 1,792,007 |
| Feb 23, 2026 | $163.60 | $167.00 | $157.71 | $159.03 | -3.57% | 2,171,208 |
| Feb 20, 2026 | $158.39 | $167.37 | $157.77 | $164.91 | +2.43% | 4,138,223 |
| Feb 19, 2026 | $153.78 | $163.14 | $147.26 | $161.00 | +6.54% | 4,932,523 |
| Feb 18, 2026 | $149.92 | $154.16 | $149.56 | $151.11 | +0.39% | 2,227,617 |
| Feb 17, 2026 | $147.93 | $152.35 | $147.93 | $150.52 | +1.19% | 1,633,900 |
| Feb 13, 2026 | $147.24 | $152.19 | $146.10 | $148.75 | +1.77% | 2,197,743 |
| Feb 12, 2026 | $148.55 | $148.75 | $142.99 | $146.17 | -1.52% | 2,706,830 |
| Feb 11, 2026 | $149.49 | $149.83 | $145.36 | $148.43 | -0.08% | 1,496,178 |
| Feb 10, 2026 | $149.77 | $151.17 | $147.63 | $148.55 | -0.66% | 2,259,345 |
| Feb 9, 2026 | $148.83 | $150.60 | $146.40 | $149.54 | -0.21% | 2,044,878 |
| Feb 6, 2026 | $153.06 | $155.79 | $149.34 | $149.86 | -0.77% | 2,629,705 |
| Feb 5, 2026 | $152.44 | $156.52 | $150.34 | $151.03 | -0.92% | 1,882,505 |
| Feb 4, 2026 | $157.10 | $157.90 | $150.79 | $152.44 | -3.00% | 1,794,603 |
| Feb 3, 2026 | $153.36 | $158.98 | $152.73 | $157.16 | +2.07% | 2,484,345 |
| Feb 2, 2026 | $156.63 | $156.86 | $150.80 | $153.98 | -1.84% | 2,614,021 |
| Jan 30, 2026 | $157.19 | $159.49 | $154.48 | $156.87 | -0.60% | 2,686,483 |
| Jan 29, 2026 | $154.48 | $159.89 | $154.48 | $157.82 | +1.24% | 1,981,864 |
| Jan 28, 2026 | $162.42 | $164.23 | $155.68 | $155.89 | -4.15% | 1,732,873 |
| Jan 27, 2026 | $161.15 | $165.47 | $161.13 | $162.64 | +1.83% | 1,682,195 |
| Jan 26, 2026 | $154.63 | $160.33 | $153.09 | $159.72 | +2.25% | 2,282,595 |
| Jan 23, 2026 | $160.02 | $160.08 | $154.23 | $156.21 | -2.61% | 2,506,239 |
| Jan 22, 2026 | $156.66 | $160.95 | $153.19 | $160.39 | +2.60% | 2,702,466 |
| Jan 21, 2026 | $163.00 | $163.96 | $156.08 | $156.32 | -4.40% | 2,940,941 |
| Jan 20, 2026 | $158.45 | $164.62 | $156.01 | $163.51 | +1.29% | 2,656,976 |
| Jan 16, 2026 | $160.35 | $163.98 | $158.39 | $161.42 | +1.35% | 3,676,502 |
| Jan 15, 2026 | $163.00 | $164.00 | $158.42 | $159.27 | -2.56% | 2,314,258 |
| Jan 14, 2026 | $163.83 | $164.96 | $160.45 | $163.46 | -0.16% | 2,623,466 |
| Jan 13, 2026 | $170.00 | $170.45 | $162.30 | $163.72 | -2.38% | 3,741,589 |
| Jan 12, 2026 | $174.86 | $175.12 | $165.28 | $167.72 | -4.69% | 4,123,627 |
| Jan 9, 2026 | $185.02 | $186.19 | $169.00 | $175.97 | +3.35% | 5,433,426 |
| Jan 8, 2026 | $174.17 | $175.00 | $168.01 | $170.27 | -3.26% | 2,589,004 |
| Jan 7, 2026 | $175.07 | $178.75 | $173.34 | $176.00 | +0.53% | 2,179,972 |
| Jan 6, 2026 | $173.33 | $175.41 | $170.94 | $175.07 | -0.07% | 1,850,230 |
| Jan 5, 2026 | $176.12 | $176.12 | $167.39 | $175.20 | -1.08% | 2,261,911 |
| Jan 2, 2026 | $175.79 | $177.90 | $173.55 | $177.12 | +1.77% | 1,831,472 |
| Dec 31, 2025 | $174.18 | $175.25 | $173.24 | $174.04 | -0.03% | 1,781,389 |
| Dec 30, 2025 | $175.79 | $176.52 | $173.48 | $174.09 | -1.28% | 1,651,368 |
| Dec 29, 2025 | $177.61 | $178.52 | $175.37 | $176.34 | -0.87% | 2,481,754 |
| Dec 26, 2025 | $178.90 | $179.44 | $176.67 | $177.88 | +0.26% | 1,035,879 |
| Dec 24, 2025 | $175.50 | $178.10 | $175.00 | $177.42 | +0.37% | 747,292 |
| Dec 23, 2025 | $174.17 | $177.60 | $172.65 | $176.77 | +0.57% | 1,619,148 |
| Dec 22, 2025 | $177.58 | $179.33 | $174.00 | $175.76 | +0.53% | 2,745,046 |
| Dec 19, 2025 | $168.30 | $178.21 | $166.71 | $174.84 | +4.98% | 19,087,990 |
| Dec 18, 2025 | $167.75 | $172.31 | $161.02 | $166.55 | -16.08% | 13,491,280 |
| Dec 17, 2025 | $200.05 | $205.23 | $198.07 | $198.46 | -1.10% | 4,476,661 |
| Dec 16, 2025 | $195.39 | $204.04 | $192.50 | $200.67 | +1.90% | 3,647,827 |
| Dec 15, 2025 | $197.23 | $201.13 | $194.75 | $196.92 | -0.05% | 4,146,744 |
| Dec 12, 2025 | $195.00 | $198.13 | $191.74 | $197.01 | +0.91% | 1,898,089 |
| Dec 11, 2025 | $190.24 | $195.36 | $189.77 | $195.24 | +2.84% | 2,282,839 |
| Dec 10, 2025 | $194.87 | $197.51 | $189.59 | $189.85 | -2.22% | 2,484,801 |
| Dec 9, 2025 | $194.50 | $198.40 | $193.29 | $194.17 | -1.21% | 2,347,467 |
| Dec 8, 2025 | $206.69 | $206.69 | $195.54 | $196.55 | -3.65% | 3,501,651 |
| Dec 5, 2025 | $204.68 | $206.56 | $203.15 | $204.00 | -0.51% | 2,160,144 |
| Dec 4, 2025 | $207.58 | $208.81 | $202.68 | $205.04 | -0.84% | 1,861,198 |
| Dec 3, 2025 | $206.60 | $207.61 | $203.33 | $206.78 | +0.09% | 2,544,385 |
| Dec 2, 2025 | $212.08 | $212.75 | $206.10 | $206.60 | -2.28% | 1,383,927 |
| Dec 1, 2025 | $206.80 | $212.58 | $205.00 | $211.41 | +1.75% | 1,868,208 |
| Nov 28, 2025 | $206.22 | $208.05 | $202.88 | $207.77 | +1.59% | 1,052,640 |
| Nov 26, 2025 | $208.49 | $209.00 | $202.27 | $204.51 | -2.16% | 2,045,039 |
| Nov 25, 2025 | $206.93 | $209.77 | $205.23 | $209.02 | +1.01% | 2,196,814 |
| Nov 24, 2025 | $202.43 | $208.72 | $199.52 | $206.93 | +4.11% | 15,708,830 |
| Nov 21, 2025 | $199.10 | $201.44 | $194.65 | $198.76 | -0.44% | 2,629,810 |
| Nov 20, 2025 | $204.35 | $208.00 | $199.00 | $199.64 | -1.93% | 2,333,221 |
| Nov 19, 2025 | $201.08 | $205.11 | $200.19 | $203.56 | +0.96% | 1,581,719 |
| Nov 18, 2025 | $195.80 | $203.65 | $195.51 | $201.62 | +2.14% | 2,412,985 |
| Nov 17, 2025 | $192.58 | $197.88 | $191.83 | $197.40 | +2.16% | 1,884,474 |
| Nov 14, 2025 | $188.09 | $197.45 | $187.55 | $193.22 | +1.18% | 2,551,474 |
| Nov 13, 2025 | $193.78 | $196.47 | $190.58 | $190.96 | -1.76% | 2,163,757 |
| Nov 12, 2025 | $192.61 | $196.33 | $191.90 | $194.39 | +0.36% | 1,602,811 |
| Nov 11, 2025 | $189.93 | $193.93 | $187.61 | $193.69 | +0.92% | 1,762,186 |
| Nov 10, 2025 | $189.67 | $192.39 | $185.69 | $191.92 | +1.17% | 2,080,777 |
| Nov 7, 2025 | $184.10 | $189.82 | $182.53 | $189.70 | +2.17% | 2,191,698 |
| Nov 6, 2025 | $186.77 | $188.45 | $183.81 | $185.68 | -0.64% | 1,857,748 |
| Nov 5, 2025 | $182.92 | $189.31 | $182.09 | $186.88 | +2.25% | 1,635,247 |
| Nov 4, 2025 | $185.28 | $187.88 | $182.58 | $182.77 | -1.86% | 2,052,847 |
| Nov 3, 2025 | $187.90 | $188.56 | $178.76 | $186.23 | -1.78% | 3,081,570 |
| Oct 31, 2025 | $194.57 | $197.08 | $187.02 | $189.60 | -2.38% | 3,156,070 |
| Oct 30, 2025 | $171.26 | $194.70 | $167.00 | $194.22 | +16.33% | 6,733,684 |
| Oct 29, 2025 | $166.48 | $167.78 | $163.82 | $166.95 | +1.00% | 2,798,308 |
| Oct 28, 2025 | $164.02 | $167.07 | $163.11 | $165.29 | +0.77% | 1,172,542 |
| Oct 27, 2025 | $162.05 | $164.14 | $160.53 | $164.02 | +2.73% | 1,465,631 |
| Oct 24, 2025 | $161.84 | $162.29 | $158.81 | $159.66 | -0.29% | 1,111,096 |
| Oct 23, 2025 | $159.41 | $160.30 | $154.79 | $160.12 | -0.17% | 2,442,223 |
| Oct 22, 2025 | $165.90 | $166.62 | $159.65 | $160.40 | -2.97% | 2,431,482 |
| Oct 21, 2025 | $166.90 | $168.09 | $162.80 | $165.31 | -1.55% | 1,732,892 |
| Oct 20, 2025 | $167.17 | $168.22 | $163.42 | $167.91 | – | 1,388,064 |
Seasonality
INSM return in each calendar month over the last 10 years, including dividends. The current month runs to the latest close.
| Year | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Average | 5.9% | 4.3% | -5.7% | 3.7% | 3.7% | 11.2% | -0.9% | 2.0% | 17.0% | -2.2% | 11.1% | -3.5% |
| Months up | 5 of 10 | 5 of 10 | 2 of 10 | 5 of 10 | 3 of 10 | 8 of 10 | 5 of 10 | 6 of 10 | 6 of 10 | 4 of 10 | 7 of 9 | 3 of 9 |
| 2026 | -9.9% | -4.8% | 9.5% | -16.6% | -21.6% | -0.3% | -7.5% | 23.5% | -6.3% | -1.4% | ||
| 2025 | 10.9% | 6.5% | -6.5% | -5.6% | -3.2% | 44.3% | 6.6% | 26.9% | 5.8% | 31.7% | 9.6% | -16.2% |
| 2024 | -10.3% | -0.3% | -2.1% | -8.9% | 122.7% | 21.7% | 8.6% | 5.1% | -4.5% | -7.8% | 11.7% | -8.1% |
| 2023 | 7.8% | -5.3% | -16.3% | 14.4% | -2.4% | 10.9% | 4.7% | -0.9% | 15.3% | -0.8% | -0.2% | 23.9% |
| 2022 | -16.7% | 5.4% | -1.7% | -6.5% | -14.3% | 4.8% | 12.2% | 11.3% | -12.5% | -19.6% | 6.8% | 8.1% |
| 2021 | 12.9% | -4.8% | -4.8% | -1.0% | -27.1% | 15.7% | -13.6% | 14.0% | -1.8% | 9.5% | -8.7% | -1.0% |
| 2020 | -14.0% | 21.2% | -35.6% | 43.5% | 5.6% | 13.4% | -5.2% | 7.9% | 14.0% | 2.5% | 18.4% | -14.7% |
| 2019 | 85.3% | 22.0% | -2.0% | 4.7% | -20.5% | 5.7% | -14.3% | -25.1% | 7.3% | 5.4% | 24.0% | 3.6% |
| 2018 | -18.4% | -4.8% | -7.0% | 8.0% | 14.5% | -15.1% | 5.2% | -19.9% | 1.5% | -27.8% | 22.7% | -26.7% |
| 2017 | 11.6% | 7.9% | 9.9% | 5.4% | -16.4% | 11.3% | -5.8% | -23.2% | 151.3% | -13.5% | 15.5% | -0.0% |