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Tetra Tech Inc (TTEK) stock

TTEKNasdaqServices-Engineering ServicesFiscal year ends September 27
Financials through Q3 FY2026, quarter ended Jun 28, 2026Last filing: 10-Q on Jul 31, 2026Score 15/308% below fair value
$38.65+0.56 (+1.47%)

Close on Oct 30, 2026Market cap $9.90BP/E 23.3Yield 0.64%

Price history

Tetra Tech share prices for every week, newest first. Adjusted for stock splits, not for dividends.

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Close, Oct 30, 2026
$38.65
+1.47% on the day
52-week range
$25.81 – $43.14
-10.4% from the high
Change over 52 weeks
+20.1%
From $32.18 on Oct 30, 2025
Average volume
2.45M
Shares a day, last 90 sessions
Week ofOpenHighLowCloseChangeVolume
Oct 26, 2026$36.92$38.76$36.35$38.65+4.52%11,848,842
Oct 19, 2026$34.49$37.00$34.38$36.98+6.51%8,897,342
Oct 12, 2026$33.45$35.17$33.18$34.72+4.14%9,076,465
Oct 5, 2026$33.05$33.70$32.02$33.34+0.66%9,397,811
Sep 28, 2026$33.58$34.25$32.91$33.12-2.33%9,885,031
Sep 21, 2026$35.81$36.33$33.33$33.91-4.97%10,900,856
Sep 14, 2026$36.60$37.27$35.52$35.69-2.21%13,063,782
Sep 8, 2026$35.76$36.52$35.30$36.49+1.62%7,421,781
Aug 31, 2026$36.40$36.74$35.38$35.91-1.72%8,925,617
Aug 24, 2026$37.06$37.59$36.14$36.54-1.24%12,577,003
Aug 17, 2026$36.24$37.44$35.34$37.00+1.34%16,536,358
Aug 10, 2026$35.02$36.74$34.27$36.51+3.02%13,373,060
Aug 3, 2026$33.69$35.49$33.53$35.44+6.88%11,534,468
Jul 27, 2026$31.81$34.96$31.56$33.16+4.57%23,732,630
Jul 20, 2026$31.58$32.06$30.41$31.71+0.38%10,500,125
Jul 13, 2026$31.28$32.34$30.72$31.59+1.94%11,987,867
Jul 6, 2026$29.89$31.75$29.75$30.99+3.65%13,376,731
Jun 29, 2026$29.38$29.92$28.12$29.90+2.19%10,000,085
Jun 22, 2026$27.18$29.34$26.71$29.26+6.94%22,468,445
Jun 15, 2026$28.56$29.00$26.79$27.36-3.76%21,183,974
Jun 8, 2026$27.75$28.69$26.94$28.43+1.90%17,550,615
Jun 1, 2026$27.49$28.68$26.98$27.90+1.49%20,000,538
May 26, 2026$27.57$28.50$27.20$27.49-0.58%14,335,050
May 18, 2026$26.53$28.10$26.38$27.65+5.61%16,176,876
May 11, 2026$30.27$30.67$25.81$26.18-13.57%26,613,403
May 4, 2026$31.67$32.49$30.26$30.29-4.36%14,598,114
Apr 27, 2026$31.35$34.29$30.70$31.67+1.38%21,635,398
Apr 20, 2026$31.47$32.44$30.52$31.24-1.17%10,908,290
Apr 13, 2026$30.16$32.27$29.90$31.61+4.70%14,229,122
Apr 6, 2026$30.96$32.00$29.88$30.19-2.83%11,305,416
Mar 30, 2026$30.48$31.55$29.57$31.07+4.33%8,098,724
Mar 23, 2026$30.90$32.37$29.75$29.78-2.04%15,856,375
Mar 16, 2026$32.33$32.49$29.99$30.40-5.53%16,806,522
Mar 9, 2026$34.78$35.24$31.53$32.18-7.71%11,157,745
Mar 2, 2026$35.81$36.70$34.10$34.87-2.71%11,350,477
Feb 23, 2026$36.16$36.26$32.16$35.84-1.32%18,291,329
Feb 17, 2026$36.65$37.42$35.42$36.32-1.02%12,158,217
Feb 9, 2026$41.31$43.14$35.09$36.70-11.13%23,375,929
Feb 2, 2026$37.66$41.81$37.02$41.29+9.64%20,741,681
Jan 26, 2026$36.98$40.88$36.43$37.66+1.87%14,909,497
Jan 20, 2026$37.26$37.58$35.90$36.97-0.80%7,488,952
Jan 12, 2026$36.30$37.45$35.66$37.27+2.59%10,874,678
Jan 5, 2026$33.57$36.38$33.25$36.33+7.96%11,272,918
Dec 29, 2025$34.04$34.27$33.33$33.65-1.12%3,803,432
Dec 22, 2025$34.33$34.92$33.89$34.03-1.22%3,471,371
Dec 15, 2025$34.57$35.21$33.90$34.45-0.32%12,740,515
Dec 8, 2025$34.03$35.00$33.25$34.56+1.23%11,262,433
Dec 1, 2025$34.48$35.60$34.09$34.14-1.73%10,939,716
Nov 24, 2025$33.08$35.16$32.43$34.74+5.11%10,713,733
Nov 17, 2025$36.37$36.39$33.01$33.05-8.73%17,139,877
Nov 10, 2025$32.30$37.75$31.18$36.21+12.40%21,680,192
Nov 3, 2025$31.81$33.17$31.34$32.22+0.73%11,088,897

Seasonality

TTEK return in each calendar month over the last 10 years, including dividends. The current month runs to the latest close.

YearJanFebMarAprMayJunJulAugSepOctNovDec
Average0.4%-0.2%-1.4%1.4%2.4%5.1%6.7%2.2%-0.5%5.3%3.0%-4.4%
Months up6 of 104 of 105 of 106 of 106 of 108 of 1010 of 106 of 104 of 107 of 107 of 91 of 9
202612.3%-4.7%-16.0%7.3%-14.7%5.1%14.8%9.2%-8.8%17.3%
2025-7.6%-20.5%0.2%6.6%12.2%2.9%2.2%-0.7%-8.3%-4.2%8.6%-3.3%
2024-5.2%12.3%4.2%5.4%7.7%-2.4%4.3%11.6%-0.8%3.6%-15.0%-4.0%
20237.1%-11.8%7.3%-5.8%-0.5%19.1%3.3%-6.9%-3.4%-0.7%5.0%5.6%
2022-18.0%14.2%3.9%-15.6%-2.9%1.2%12.2%-11.3%-5.4%9.9%9.6%-6.1%
20215.0%14.0%-1.9%-6.0%-6.2%2.2%9.4%7.9%3.8%17.6%5.1%-8.0%
2020-0.6%-5.4%-12.7%6.6%5.1%0.3%12.0%4.3%3.5%5.7%18.3%-2.9%
20196.6%9.0%-0.7%8.6%4.6%16.3%0.8%2.6%7.0%0.8%1.1%-2.4%
20183.2%-1.3%0.0%-1.1%13.8%6.5%3.9%15.0%-2.1%-3.3%-7.5%-15.1%
20171.3%-7.7%1.5%7.6%4.8%-0.4%3.7%-10.0%9.3%5.8%1.7%-3.7%