California State Teachers Retirement System (CalSTRS)
TSE

California State Teachers Retirement System (CalSTRS)’s Trinseo TSE Stock Holding History

California State Teachers Retirement System (CalSTRS)’s Portfolio TSE Stock Details TSE Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q1 		– Sell
-2,091
Closed -$1.04K – 3047
2025
Q4 		$1.04K Sell
2,091
-35
-2% -$42 ﹤0.01% 3042
2025
Q3 		$5K Buy
2,126
+2
+0.1% +$5 ﹤0.01% 2980
2025
Q2 		$6.63K Buy
+2,124
New +$7K ﹤0.01% 2862
2024
Q2 		– Sell
-3,520
Closed -$13.3K – 3181
2024
Q1 		$13.3K Sell
3,520
-2,242
-39% -$12K ﹤0.01% 2858
2023
Q4 		$48.2K Sell
5,762
-26,774
-82% -$179K ﹤0.01% 2615
2023
Q3 		$266K Sell
32,536
-3,724
-10% -$47.2K ﹤0.01% 2452
2023
Q2 		$459K Sell
36,260
-1,327
-4% -$21.4K ﹤0.01% 2339
2023
Q1 		$784K Sell
37,587
-695
-2% -$17K ﹤0.01% 2038
2022
Q4 		$869K Sell
38,282
-415
-1% -$9.15K ﹤0.01% 1996
2022
Q3 		$709K Sell
38,697
-2,008
-5% -$62.9K ﹤0.01% 2129
2022
Q2 		$1.57M Sell
40,705
-2,410
-6% -$109K ﹤0.01% 1648
2022
Q1 		$2.07M Sell
43,115
-4,321
-9% -$227K ﹤0.01% 1589
2021
Q4 		$2.49M Buy
47,436
+1,075
+2% +$58.2K ﹤0.01% 1606
2021
Q3 		$2.5M Sell
46,361
-7,274
-14% -$378K ﹤0.01% 1602
2021
Q2 		$3.21M Sell
53,635
-4,075
-7% -$260K ﹤0.01% 1484
2021
Q1 		$3.67M Sell
57,710
-266
-0.5% -$16.2K ﹤0.01% 1383
2020
Q4 		$2.97M Buy
57,976
+197
+0.3% +$7.51K ﹤0.01% 1410
2020
Q3 		$1.48M Buy
57,779
+76
+0.1% +$1.9K ﹤0.01% 1669
2020
Q2 		$1.28M Sell
57,703
-1,630
-3% -$33.4K ﹤0.01% 1728
2020
Q1 		$1.07M Sell
59,333
-670
-1% -$17.8K ﹤0.01% 1648
2019
Q4 		$2.23M Sell
60,003
-2,808
-4% -$114K ﹤0.01% 1501
2019
Q3 		$2.7M Sell
62,811
-222
-0.4% -$8.27K 0.01% 1349
2019
Q2 		$2.67M Sell
63,033
-2,583
-4% -$111K 0.01% 1383
2019
Q1 		$2.97M Sell
65,616
-1,459
-2% -$70.6K 0.01% 1285
2018
Q4 		$3.07M Buy
67,075
+1,513
+2% +$82.2K 0.01% 1188
2018
Q3 		$5.13M Sell
65,562
-915
-1% -$68.5K 0.01% 1004
2018
Q2 		$4.72M Sell
66,477
-1,154
-2% -$85.8K 0.01% 1050
2018
Q1 		$5.01M Sell
67,631
-2,370
-3% -$187K 0.01% 969
2017
Q4 		$5.08M Sell
70,001
-1,116
-2% -$79.5K 0.01% 989
2017
Q3 		$4.77M Sell
71,117
-7,513
-10% -$500K 0.01% 1015
2017
Q2 		$5.4M Buy
78,630
+25,049
+47% +$1.64M 0.01% 978
2017
Q1 		$3.6M Sell
53,581
-2,600
-5% -$175K 0.01% 1280
2016
Q4 		$3.33M Sell
56,181
-4,700
-8% -$264K 0.01% 1359
2016
Q3 		$3.44M Buy
60,881
+600
+1% +$31.8K 0.01% 1312
2016
Q2 		$2.59M Buy
60,281
+36,016
+148% +$1.58M 0.01% 1448
2016
Q1 		$893K Buy
24,265
+3,061
+14% +$87.1K ﹤0.01% 2073
2015
Q4 		$598K Buy
21,204
+376
+2% +$11K ﹤0.01% 2313
2015
Q3 		$526K Sell
20,828
-100
-0.5% -$2.67K ﹤0.01% 2387
2015
Q2 		$562K Buy
20,928
+37
+0.2% +$947 ﹤0.01% 2474
2015
Q1 		$414K Sell
20,891
-400
-2% -$6.97K ﹤0.01% 2570
2014
Q4 		$372K Buy
21,291
+91
+0.4% +$1.38K ﹤0.01% 2665
2014
Q3 		$333K Buy
+21,200
New +$396K ﹤0.01% 2677

Other funds holding TSE

KBFS
Kohmann Bosshard Financial Services Fairlawn, Ohio $1.18B AUM 16.34% 1-Year Est. Return
N
Nuveen Charlotte, North Carolina $369B AUM 31.66% 1-Year Est. Return
EWA
EverSource Wealth Advisors Birmingham, Alabama $2.97B AUM 28.72% 1-Year Est. Return
Barclays
Barclays London, United Kingdom $416B AUM 33.63% 1-Year Est. Return
GI
GAMMA Investing Foster City, California $2.69B AUM 42.78% 1-Year Est. Return
RhumbLine Advisers
RhumbLine Advisers Boston, Massachusetts $117B AUM 29.66% 1-Year Est. Return
ME
McIlrath & Eck Arlington, Washington $1.35B AUM 15.78% 1-Year Est. Return
SC
Swan Capital Pensacola, Florida $272M AUM 14.84% 1-Year Est. Return
Rockefeller Capital Management
Rockefeller Capital Management New York $56.4B AUM 24.96% 1-Year Est. Return
EP
Essential Partners Rancho Santa Fe, California $297M AUM 40.85% 1-Year Est. Return

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

California State Teachers Retirement System (CalSTRS) sold out of Trinseo (TSE) in Q1 2026, closing a stake of 2,091 shares — an estimated $1.04K sold.

California State Teachers Retirement System (CalSTRS) first reported a position in TSE in Q3 2014 and held it in 42 quarters. The position peaked at $5.4M in Q2 2017. 14 funds tracked by Wall St. Rank hold TSE as of Q1 2026.

  • California State Teachers Retirement System (CalSTRS) reported no remaining Trinseo position as of Q1 2026 after selling out during the quarter.
  • California State Teachers Retirement System (CalSTRS) sold 2,091 Trinseo shares in Q1 2026, an estimated $1.04K.
  • California State Teachers Retirement System (CalSTRS) first reported a position in Trinseo in Q3 2014 and held it in 42 quarters.
  • California State Teachers Retirement System (CalSTRS)'s Trinseo position peaked at $5.4M in Q2 2017.
  • 14 funds tracked by Wall St. Rank held Trinseo as of Q1 2026.

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