California State Teachers Retirement System (CalSTRS)
QTRX icon

California State Teachers Retirement System (CalSTRS)’s Quanterix QTRX Stock Holding History

California State Teachers Retirement System (CalSTRS)’s Portfolio QTRX Stock Details QTRX Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q1 		$8.41K Sell
2,389
-329
-12% -$1.92K ﹤0.01% 2753
2025
Q4 		$17.3K Buy
2,718
+180
+7% +$1.12K ﹤0.01% 2579
2025
Q3 		$13.8K Sell
2,538
-65
-2% -$346 ﹤0.01% 2706
2025
Q2 		$17.3K Hold
2,603
– – ﹤0.01% 2538
2025
Q1 		$16.9K Sell
2,603
-31,427
-92% -$262K ﹤0.01% 2583
2024
Q4 		$362K Sell
34,030
-311
-0.9% -$3.78K ﹤0.01% 2243
2024
Q3 		$445K Sell
34,341
-1,079
-3% -$14.4K ﹤0.01% 2170
2024
Q2 		$468K Sell
35,420
-486
-1% -$8.12K ﹤0.01% 2124
2024
Q1 		$846K Sell
35,906
-1,670
-4% -$41.4K ﹤0.01% 1887
2023
Q4 		$1.03M Sell
37,576
-1,598
-4% -$37.6K ﹤0.01% 1808
2023
Q3 		$1.06M Sell
39,174
-3,789
-9% -$93.8K ﹤0.01% 1756
2023
Q2 		$969K Sell
42,963
-582
-1% -$10.4K ﹤0.01% 1930
2023
Q1 		$491K Sell
43,545
-538
-1% -$6.87K ﹤0.01% 2313
2022
Q4 		$611K Buy
44,083
+508
+1% +$5.84K ﹤0.01% 2249
2022
Q3 		$480K Sell
43,575
-1,572
-3% -$20K ﹤0.01% 2359
2022
Q2 		$731K Sell
45,147
-17,613
-28% -$362K ﹤0.01% 2158
2022
Q1 		$1.83M Sell
62,760
-3,425
-5% -$105K ﹤0.01% 1675
2021
Q4 		$2.81M Buy
66,185
+25,721
+64% +$1.2M ﹤0.01% 1521
2021
Q3 		$2.02M Sell
40,464
-2,058
-5% -$106K ﹤0.01% 1718
2021
Q2 		$2.49M Sell
42,522
-11,291
-21% -$655K ﹤0.01% 1653
2021
Q1 		$3.15M Buy
53,813
+21,982
+69% +$1.49M ﹤0.01% 1482
2020
Q4 		$1.48M Hold
31,831
– – ﹤0.01% 1800
2020
Q3 		$1.07M Buy
31,831
+3,267
+11% +$105K ﹤0.01% 1824
2020
Q2 		$782K Buy
28,564
+7,932
+38% +$200K ﹤0.01% 1989
2020
Q1 		$379K Buy
20,632
+238
+1% +$5.43K ﹤0.01% 2220
2019
Q4 		$482K Buy
20,394
+142
+0.7% +$3.24K ﹤0.01% 2376
2019
Q3 		$445K Buy
20,252
+5,593
+38% +$156K ﹤0.01% 2372
2019
Q2 		$495K Buy
14,659
+1,332
+10% +$34.5K ﹤0.01% 2369
2019
Q1 		$344K Hold
13,327
– – ﹤0.01% 2513
2018
Q4 		$244K Buy
13,327
+568
+4% +$10.2K ﹤0.01% 2666
2018
Q3 		$273K Buy
12,759
+5,194
+69% +$82.1K ﹤0.01% 2751
2018
Q2 		$109K Hold
7,565
– – ﹤0.01% 2984
2018
Q1 		$129K Buy
+7,565
New +$152K ﹤0.01% 2887

Other funds holding QTRX

Ameriprise
Ameriprise Minneapolis, Minnesota $432B AUM 30.22% 1-Year Est. Return
BlackRock
BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return
PCM
Portolan Capital Management Boston, Massachusetts $1.88B AUM 115.74% 1-Year Est. Return
BWLSA
Blue Water Life Science Advisors Larkspur, California $125M AUM 91.82% 1-Year Est. Return
William Blair Investment Management
William Blair Investment Management Chicago, Illinois $30.3B AUM 33.75% 1-Year Est. Return
ICM
Invenomic Capital Management Boston, Massachusetts $2.18B AUM 0.03% 1-Year Est. Return
VCM
Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM
LCS
Levin Capital Strategies New York $1.32B AUM 28.11% 1-Year Est. Return
First Eagle Investment Management
First Eagle Investment Management New York $59B AUM 32.99% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.61T AUM 30.72% 1-Year Est. Return

California State Teachers Retirement System (CalSTRS)'s QTRX Position: Q1 2026 in Review

California State Teachers Retirement System (CalSTRS) reduced its Quanterix (QTRX) stake by 12% in Q1 2026, selling an estimated $1.92K and leaving 2,389 shares worth $8.41K. The position accounts for ﹤0.01% of the portfolio, ranked #2753.

California State Teachers Retirement System (CalSTRS) first reported a position in QTRX in Q1 2018 and has held it in 33 quarters since. The position peaked at $3.15M in Q1 2021. 128 funds tracked by Wall St. Rank hold QTRX as of Q1 2026.

  • California State Teachers Retirement System (CalSTRS) held 2,389 shares of Quanterix worth $8.41K as of Q1 2026.
  • California State Teachers Retirement System (CalSTRS) sold 329 Quanterix shares in Q1 2026, an estimated $1.92K.
  • Quanterix made up ﹤0.01% of California State Teachers Retirement System (CalSTRS)'s portfolio in Q1 2026, its #2753 holding.
  • California State Teachers Retirement System (CalSTRS) first reported a position in Quanterix in Q1 2018 and has held it in 33 quarters since.
  • California State Teachers Retirement System (CalSTRS)'s Quanterix position peaked at $3.15M in Q1 2021.
  • 128 funds tracked by Wall St. Rank held Quanterix as of Q1 2026.

Based on California State Teachers Retirement System (CalSTRS)'s 13F filing for Q1 2026, filed 18 May 2026.