Arrowstreet Capital
IOSP icon

Arrowstreet Capital’s Innospec IOSP Stock Holding History

Arrowstreet Capital’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
Q2 		$2.84M Buy
34,876
+16,379
+89% +$1.3M ﹤0.01% 1447
2026
Q1 		$1.35M Buy
18,497
+12,259
+197% +$955K ﹤0.01% 1487
2025
Q4 		$477K Buy
+6,238
New +$471K ﹤0.01% 1689
2023
Q1 		– Sell
-2,819
Closed -$290K – 1425
2022
Q4 		$290K Buy
+2,819
New +$286K ﹤0.01% 1209
2021
Q2 		– Sell
-26,305
Closed -$2.7M – 2050
2021
Q1 		$2.7M Sell
26,305
-35,879
-58% -$3.55M ﹤0.01% 1442
2020
Q4 		$5.64M Sell
62,184
-92,996
-60% -$7.21M 0.01% 1149
2020
Q3 		$9.83M Buy
155,180
+61,048
+65% +$4.53M 0.02% 853
2020
Q2 		$7.27M Buy
94,132
+42,792
+83% +$3.13M 0.01% 903
2020
Q1 		$3.57M Sell
51,340
-81,845
-61% -$7.48M 0.01% 873
2019
Q4 		$13.8M Buy
133,185
+104,559
+365% +$10M 0.03% 506
2019
Q3 		$2.55M Buy
+28,626
New +$2.57M 0.01% 905
2019
Q2 		– Sell
-5,653
Closed -$471K – 1526
2019
Q1 		$471K Buy
+5,653
New +$421K ﹤0.01% 1495
2017
Q2 		– Sell
-86,372
Closed -$5.59M – 1190
2017
Q1 		$5.59M Buy
+86,372
New +$5.78M 0.02% 537
2016
Q4 		– Sell
-155,604
Closed -$9.46M – 2073
2016
Q3 		$9.46M Buy
155,604
+3,059
+2% +$170K 0.03% 468
2016
Q2 		$7.02M Buy
152,545
+103,373
+210% +$4.89M 0.02% 513
2016
Q1 		$2.13M Buy
49,172
+37,172
+310% +$1.72M 0.01% 792
2015
Q4 		$652K Buy
+12,000
New +$662K ﹤0.01% 1084
2015
Q3 		– Sell
-81,438
Closed -$3.67M – 1421
2015
Q2 		$3.67M Buy
81,438
+32,209
+65% +$1.44M 0.02% 499
2015
Q1 		$2.28M Buy
+49,229
New +$2.11M 0.01% 580

Other funds holding IOSP

BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
Allspring Global Investments
Allspring Global Investments Charlotte, North Carolina $65.2B AUM 39.42% 1-Year Est. Return
Vanguard Portfolio Management
Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM
Dimensional Fund Advisors
Dimensional Fund Advisors Austin, Texas $552B AUM 44.19% 1-Year Est. Return
Vanguard Capital Management
Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM
State Street
State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return
Nuveen
Nuveen Charlotte, North Carolina $419B AUM 43.02% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return
Goldman Sachs
Goldman Sachs New York $1.15T AUM 47.82% 1-Year Est. Return
Victory Capital Management
Victory Capital Management San Antonio, Texas $178B AUM 37.23% 1-Year Est. Return

Arrowstreet Capital's IOSP Position: Q2 2026 in Review

Arrowstreet Capital increased its Innospec (IOSP) stake by 89% in Q2 2026, buying an estimated $1.3M and bringing the position to 34,876 shares worth $2.84M. The position accounts for ﹤0.01% of the portfolio, ranked #1447.

Arrowstreet Capital first reported a position in IOSP in Q1 2015 and has held it in 19 quarters since. The position peaked at $13.8M in Q4 2019. 282 funds tracked by Wall St. Rank hold IOSP as of Q2 2026.

  • Arrowstreet Capital held 34,876 shares of Innospec worth $2.84M as of Q2 2026.
  • Arrowstreet Capital bought 16,379 Innospec shares in Q2 2026, an estimated $1.3M.
  • Innospec made up ﹤0.01% of Arrowstreet Capital's portfolio in Q2 2026, its #1447 holding.
  • Arrowstreet Capital first reported a position in Innospec in Q1 2015 and has held it in 19 quarters since.
  • Arrowstreet Capital's Innospec position peaked at $13.8M in Q4 2019.
  • 282 funds tracked by Wall St. Rank held Innospec as of Q2 2026.

Based on Arrowstreet Capital's 13F filing for Q2 2026, filed 13 Aug 2026.