California State Teachers Retirement System (CalSTRS)
IOSP icon

California State Teachers Retirement System (CalSTRS)’s Innospec IOSP Stock Holding History

California State Teachers Retirement System (CalSTRS)’s Portfolio IOSP Stock Details IOSP Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q1 		$2.01M Buy
27,529
+3,729
+16% +$290K ﹤0.01% 1512
2025
Q4 		$1.82M Buy
23,800
+737
+3% +$55.6K ﹤0.01% 1463
2025
Q3 		$1.78M Buy
23,063
+1
+0% +$83 ﹤0.01% 1459
2025
Q2 		$1.94M Buy
23,062
+179
+0.8% +$15.7K ﹤0.01% 1383
2025
Q1 		$2.17M Sell
22,883
-439
-2% -$46.4K ﹤0.01% 1292
2024
Q4 		$2.57M Sell
23,322
-264
-1% -$30.2K ﹤0.01% 1266
2024
Q3 		$2.67M Sell
23,586
-683
-3% -$79.5K ﹤0.01% 1245
2024
Q2 		$3M Sell
24,269
-604
-2% -$75.6K ﹤0.01% 1125
2024
Q1 		$3.21M Sell
24,873
-1,461
-6% -$177K ﹤0.01% 1134
2023
Q4 		$3.25M Sell
26,334
-1,158
-4% -$123K ﹤0.01% 1155
2023
Q3 		$2.81M Sell
27,492
-2,763
-9% -$289K ﹤0.01% 1197
2023
Q2 		$3.04M Sell
30,255
-714
-2% -$71.5K ﹤0.01% 1256
2023
Q1 		$3.18M Sell
30,969
-487
-2% -$52.4K ﹤0.01% 1209
2022
Q4 		$3.24M Buy
31,456
+324
+1% +$32.9K 0.01% 1197
2022
Q3 		$2.67M Sell
31,132
-647
-2% -$61.1K ﹤0.01% 1258
2022
Q2 		$3.04M Buy
31,779
+367
+1% +$35.7K ﹤0.01% 1242
2022
Q1 		$2.91M Sell
31,412
-2,808
-8% -$266K ﹤0.01% 1380
2021
Q4 		$3.09M Buy
34,220
+794
+2% +$70.1K ﹤0.01% 1459
2021
Q3 		$2.81M Sell
33,426
-376
-1% -$33.5K ﹤0.01% 1513
2021
Q2 		$3.06M Sell
33,802
-3,162
-9% -$313K ﹤0.01% 1521
2021
Q1 		$3.8M Buy
36,964
+15
+0% +$1.48K 0.01% 1367
2020
Q4 		$3.35M Hold
36,949
– – ﹤0.01% 1352
2020
Q3 		$2.34M Hold
36,949
– – ﹤0.01% 1415
2020
Q2 		$2.85M Hold
36,949
– – 0.01% 1243
2020
Q1 		$2.57M Sell
36,949
-183
-0.5% -$16.7K 0.01% 1164
2019
Q4 		$3.84M Sell
37,132
-750
-2% -$71.7K 0.01% 1172
2019
Q3 		$3.38M Buy
37,882
+470
+1% +$42.1K 0.01% 1219
2019
Q2 		$3.41M Buy
37,412
+301
+0.8% +$25.4K 0.01% 1221
2019
Q1 		$3.09M Sell
37,111
-826
-2% -$61.6K 0.01% 1259
2018
Q4 		$2.34M Buy
37,937
+845
+2% +$58.1K 0.01% 1357
2018
Q3 		$2.85M Sell
37,092
-2
-0% -$156 0.01% 1397
2018
Q2 		$2.84M Buy
37,094
+586
+2% +$43.9K 0.01% 1375
2018
Q1 		$2.5M Sell
36,508
-1,280
-3% -$89K 0.01% 1382
2017
Q4 		$2.67M Sell
37,788
-576
-2% -$38.4K 0.01% 1387
2017
Q3 		$2.37M Sell
38,364
-4,078
-10% -$244K 0.01% 1451
2017
Q2 		$2.78M Sell
42,442
-4,079
-9% -$262K 0.01% 1400
2017
Q1 		$3.01M Sell
46,521
-2,200
-5% -$147K 0.01% 1390
2016
Q4 		$3.34M Sell
48,721
-1,300
-3% -$83.6K 0.01% 1358
2016
Q3 		$3.04M Buy
50,021
+500
+1% +$27.8K 0.01% 1382
2016
Q2 		$2.28M Sell
49,521
-2,014
-4% -$95.3K ﹤0.01% 1547
2016
Q1 		$2.23M Buy
51,535
+6,664
+15% +$308K ﹤0.01% 1517
2015
Q4 		$2.44M Buy
44,871
+700
+2% +$38.6K 0.01% 1427
2015
Q3 		$2.05M Sell
44,171
-100
-0.2% -$4.58K 0.01% 1519
2015
Q2 		$1.99M Sell
44,271
-400
-0.9% -$17.9K ﹤0.01% 1656
2015
Q1 		$2.07M Sell
44,671
-800
-2% -$34.3K ﹤0.01% 1579
2014
Q4 		$1.94M Buy
45,471
+492
+1% +$20.2K ﹤0.01% 1637
2014
Q3 		$1.61M Buy
44,979
+456
+1% +$18.5K ﹤0.01% 1693
2014
Q2 		$1.92M Buy
44,523
+1,800
+4% +$77.6K ﹤0.01% 1631
2014
Q1 		$1.93M Buy
42,723
+200
+0.5% +$8.81K 0.01% 1580
2013
Q4 		$1.97M Buy
42,523
+300
+0.7% +$13.8K 0.01% 1533
2013
Q3 		$1.97M Buy
42,223
+1,272
+3% +$54.8K 0.01% 1477
2013
Q2 		$1.65M Buy
+40,951
New +$1.71M 0.01% 1521

Other funds holding IOSP

BlackRock
BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return
Allspring Global Investments
Allspring Global Investments Charlotte, North Carolina $59.7B AUM 29.08% 1-Year Est. Return
VPM
Vanguard Portfolio Management Malvern, Pennsylvania $1.91T AUM
Dimensional Fund Advisors
Dimensional Fund Advisors Austin, Texas $481B AUM 30.42% 1-Year Est. Return
VCM
Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM
State Street
State Street Boston, Massachusetts $2.9T AUM 29.55% 1-Year Est. Return
Victory Capital Management
Victory Capital Management San Antonio, Texas $156B AUM 27.51% 1-Year Est. Return
N
Nuveen Charlotte, North Carolina $369B AUM 31.66% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.61T AUM 30.72% 1-Year Est. Return
Two Sigma Investments
Two Sigma Investments New York $124B AUM 33.93% 1-Year Est. Return

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

California State Teachers Retirement System (CalSTRS) increased its Innospec (IOSP) stake by 16% in Q1 2026, buying an estimated $290K and bringing the position to 27,529 shares worth $2.01M. The position accounts for ﹤0.01% of the portfolio, ranked #1512.

California State Teachers Retirement System (CalSTRS) first reported a position in IOSP in Q2 2013 and has held it in 52 quarters since. The position peaked at $3.84M in Q4 2019. 266 funds tracked by Wall St. Rank hold IOSP as of Q1 2026.

  • California State Teachers Retirement System (CalSTRS) held 27,529 shares of Innospec worth $2.01M as of Q1 2026.
  • California State Teachers Retirement System (CalSTRS) bought 3,729 Innospec shares in Q1 2026, an estimated $290K.
  • Innospec made up ﹤0.01% of California State Teachers Retirement System (CalSTRS)'s portfolio in Q1 2026, its #1512 holding.
  • California State Teachers Retirement System (CalSTRS) first reported a position in Innospec in Q2 2013 and has held it in 52 quarters since.
  • California State Teachers Retirement System (CalSTRS)'s Innospec position peaked at $3.84M in Q4 2019.
  • 266 funds tracked by Wall St. Rank held Innospec as of Q1 2026.

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