Affiliated Managers Group, Inc. (MGRB) stock
MGRBNYSEInvestment AdviceFiscal year ends December 31Also trades as AMG, MGR, MGRD, MGRE
Financials through Q2 FY2026, quarter ended Jun 30, 2026Last filing: 10-Q on Aug 7, 2026Score 15/307% below fair value
$15.28+0.05 (+0.33%)
Close on Oct 30, 2026Market cap $411.03MP/E 0.5Yield 0.26%
Price history
Affiliated Managers share prices for every month, newest first. Adjusted for stock splits, not for dividends.
Close, Oct 30, 2026
$15.28
+0.33% on the day
52-week range
$15.11 – $17.92
-14.7% from the high
Change over 52 weeks
-13.3%
From $17.62 on Oct 30, 2025
Average volume
24,636
Shares a day, last 90 sessions
| Month | Open | High | Low | Close | Change | Volume |
|---|---|---|---|---|---|---|
| Oct 2026 | $15.99 | $15.99 | $15.11 | $15.28 | -4.44% | 686,949 |
| Sep 2026 | $15.95 | $16.35 | $15.73 | $15.99 | -0.06% | 559,671 |
| Aug 2026 | $16.74 | $16.82 | $15.99 | $16.00 | -4.53% | 291,701 |
| Jul 2026 | $16.19 | $17.16 | $16.09 | $16.76 | +3.65% | 554,650 |
| Jun 2026 | $16.76 | $17.09 | $15.93 | $16.17 | -3.81% | 565,102 |
| May 2026 | $16.54 | $17.06 | $16.54 | $16.81 | +1.69% | 310,913 |
| Apr 2026 | $16.10 | $16.94 | $15.81 | $16.53 | +2.86% | 261,706 |
| Mar 2026 | $17.53 | $17.74 | $15.90 | $16.07 | -8.43% | 344,464 |
| Feb 2026 | $17.50 | $17.92 | $17.43 | $17.55 | +0.52% | 323,807 |
| Jan 2026 | $17.04 | $17.71 | $16.95 | $17.46 | +2.95% | 526,372 |
| Dec 2025 | $17.35 | $17.71 | $16.88 | $16.96 | -2.64% | 504,319 |
| Nov 2025 | $17.61 | $17.81 | $17.03 | $17.42 | -0.57% | 254,470 |
| Oct 2025 | $18.04 | $18.43 | $17.39 | $17.52 | -2.83% | 254,674 |
| Sep 2025 | $18.22 | $19.10 | $18.01 | $18.03 | -0.88% | 180,715 |
| Aug 2025 | $17.46 | $18.58 | $17.25 | $18.19 | +4.42% | 360,771 |
| Jul 2025 | $16.98 | $18.44 | $16.90 | $17.42 | +2.89% | 309,428 |
| Jun 2025 | $16.41 | $17.12 | $16.33 | $16.93 | +3.55% | 409,189 |
| May 2025 | $17.01 | $17.89 | $16.35 | $16.35 | -3.43% | 505,709 |
| Apr 2025 | $17.63 | $17.88 | $16.13 | $16.93 | -3.48% | 957,075 |
| Mar 2025 | $18.77 | $18.84 | $17.33 | $17.54 | -6.00% | 266,766 |
| Feb 2025 | $18.63 | $19.11 | $18.28 | $18.66 | 0.00% | 233,184 |
| Jan 2025 | $18.20 | $19.13 | $17.38 | $18.66 | +2.64% | 483,920 |
| Dec 2024 | $19.64 | $19.64 | $17.68 | $18.18 | -7.95% | 1,102,323 |
| Nov 2024 | $19.87 | $20.20 | $19.01 | $19.75 | +0.15% | 300,545 |
| Oct 2024 | $20.10 | $21.00 | $19.72 | $19.72 | -1.35% | 284,669 |
| Sep 2024 | $19.62 | $20.93 | $19.48 | $19.99 | +2.04% | 257,930 |
| Aug 2024 | $19.07 | $20.06 | $18.73 | $19.59 | +2.83% | 282,965 |
| Jul 2024 | $18.77 | $19.71 | $18.69 | $19.05 | +1.01% | 258,241 |
| Jun 2024 | $18.92 | $19.49 | $18.72 | $18.86 | +0.32% | 250,130 |
| May 2024 | $18.59 | $19.24 | $18.33 | $18.80 | +1.57% | 329,457 |
| Apr 2024 | $19.37 | $19.85 | $18.00 | $18.51 | -3.59% | 291,126 |
| Mar 2024 | $19.58 | $20.06 | $18.44 | $19.20 | -1.94% | 369,105 |
| Feb 2024 | $19.19 | $19.68 | $18.90 | $19.58 | +2.19% | 249,256 |
| Jan 2024 | $18.79 | $19.46 | $17.86 | $19.16 | +1.11% | 354,411 |
| Dec 2023 | $17.27 | $19.05 | $17.10 | $18.95 | +9.73% | 875,245 |
| Nov 2023 | $16.47 | $17.92 | $16.20 | $17.27 | +5.76% | 586,786 |
| Oct 2023 | $16.49 | $17.07 | $15.83 | $16.33 | -0.79% | 406,404 |
| Sep 2023 | $17.69 | $17.69 | $16.27 | $16.46 | -7.11% | 1,186,983 |
| Aug 2023 | $18.50 | $18.50 | $16.93 | $17.72 | -4.22% | 318,506 |
| Jul 2023 | $17.86 | $18.70 | $17.45 | $18.50 | +4.17% | 213,615 |
| Jun 2023 | $18.29 | $18.81 | $17.49 | $17.76 | -2.58% | 385,956 |
| May 2023 | $19.85 | $19.98 | $16.68 | $18.23 | -8.58% | 728,588 |
| Apr 2023 | $17.91 | $20.18 | $17.62 | $19.94 | +11.02% | 344,935 |
| Mar 2023 | $19.72 | $19.73 | $16.42 | $17.96 | -9.06% | 396,471 |
| Feb 2023 | $20.04 | $20.38 | $19.10 | $19.75 | -1.25% | 389,885 |
| Jan 2023 | $17.01 | $20.22 | $16.86 | $20.00 | +18.91% | 483,204 |
| Dec 2022 | $18.94 | $19.32 | $16.78 | $16.82 | -10.63% | 814,593 |
| Nov 2022 | $17.23 | $18.87 | $16.44 | $18.82 | +10.12% | 489,113 |
| Oct 2022 | $18.80 | $19.12 | $16.62 | $17.09 | -8.22% | 552,358 |
| Sep 2022 | $19.34 | $19.48 | $18.18 | $18.62 | -3.92% | 530,385 |
| Aug 2022 | $20.96 | $22.04 | $19.35 | $19.38 | -7.54% | 472,055 |
| Jul 2022 | $19.93 | $20.96 | $19.36 | $20.96 | +6.02% | 420,220 |
| Jun 2022 | $21.19 | $21.19 | $18.82 | $19.77 | -6.30% | 405,205 |
| May 2022 | $19.62 | $21.10 | $18.44 | $21.10 | +7.11% | 1,034,938 |
| Apr 2022 | $22.02 | $22.12 | $19.29 | $19.70 | -10.29% | 708,022 |
| Mar 2022 | $22.86 | $22.95 | $21.12 | $21.96 | -2.87% | 613,863 |
| Feb 2022 | $24.79 | $25.02 | $21.71 | $22.61 | -9.12% | 779,606 |
| Jan 2022 | $26.30 | $26.30 | $24.00 | $24.88 | -5.47% | 1,077,219 |
| Dec 2021 | $25.29 | $26.35 | $25.25 | $26.32 | +4.44% | 536,894 |
| Nov 2021 | $25.92 | $26.28 | $25.15 | $25.20 | -2.74% | 469,324 |
| Oct 2021 | $26.03 | $26.15 | $25.42 | $25.91 | -0.23% | 654,064 |
| Sep 2021 | $26.40 | $26.82 | $25.50 | $25.97 | -1.55% | 489,524 |
| Aug 2021 | $26.70 | $26.90 | $26.17 | $26.38 | -1.27% | 309,602 |
| Jul 2021 | $26.01 | $26.90 | $26.01 | $26.72 | +2.85% | 420,445 |
| Jun 2021 | $26.03 | $26.50 | $25.84 | $25.98 | -0.27% | 389,763 |
| May 2021 | $25.80 | $26.08 | $25.55 | $26.05 | +1.64% | 402,925 |
| Apr 2021 | $25.32 | $26.25 | $25.31 | $25.63 | +1.34% | 465,010 |
| Mar 2021 | $25.06 | $25.61 | $24.90 | $25.29 | +1.28% | 869,241 |
| Feb 2021 | $26.18 | $26.29 | $24.65 | $24.97 | -4.62% | 517,350 |
| Jan 2021 | $26.44 | $26.44 | $25.25 | $26.18 | -0.72% | 983,530 |
| Dec 2020 | $26.25 | $26.99 | $26.08 | $26.37 | +0.61% | 911,605 |
| Nov 2020 | $26.00 | $26.37 | $25.78 | $26.21 | +0.89% | 1,403,502 |
| Oct 2020 | $25.65 | $26.58 | $25.35 | $25.98 | +1.37% | 3,291,569 |
| Sep 2020 | $25.05 | $25.82 | $24.90 | $25.63 | – | 844,772 |
Seasonality
MGRB return in each calendar month over the last 7 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 | 3.2% | -2.0% | -3.0% | -0.4% | 0.0% | -0.1% | 3.4% | -1.7% | -0.4% | -2.4% | 2.3% | 0.4% |
| Months up | 4 of 6 | 2 of 6 | 1 of 6 | 3 of 6 | 4 of 6 | 2 of 6 | 6 of 6 | 2 of 6 | 3 of 6 | 1 of 7 | 4 of 6 | 3 of 6 |
| 2026 | 2.9% | 0.5% | -6.8% | 2.9% | 1.7% | -2.0% | 3.6% | -4.5% | 1.8% | -4.4% | ||
| 2025 | 2.6% | 0.0% | -4.4% | -3.5% | -3.4% | 5.4% | 2.9% | 4.4% | 0.7% | -2.8% | -0.6% | -0.9% |
| 2024 | 1.1% | 2.2% | -0.4% | -3.6% | 1.6% | 1.9% | 1.0% | 2.8% | 3.5% | -1.4% | 0.2% | -6.4% |
| 2023 | 18.9% | -1.3% | -7.4% | 11.0% | -8.6% | -1.0% | 4.2% | -4.2% | -5.4% | -0.8% | 5.8% | 11.5% |
| 2022 | -5.5% | -9.1% | -1.5% | -10.3% | 7.1% | -4.9% | 6.0% | -7.5% | -2.4% | -8.2% | 10.1% | -9.1% |
| 2021 | -0.7% | -4.6% | 2.5% | 1.3% | 1.6% | -0.3% | 2.8% | -1.3% | -0.4% | -0.2% | -2.7% | 5.6% |
| 2020 | 1.4% | 0.9% | 1.8% |