Marshall Wace
IOSP icon

Marshall Wace’s Innospec IOSP Stock Holding History

Marshall Wace’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 		$1.88M Sell
23,075
-10,451
-31% -$827K ﹤0.01% 1900
2026
Q1 		$2.45M Buy
33,526
+24,298
+263% +$1.89M ﹤0.01% 1667
2025
Q4 		$706K Buy
+9,228
New +$697K ﹤0.01% 2097
2024
Q3 		– Sell
-39,992
Closed -$4.94M – 2724
2024
Q2 		$4.94M Buy
+39,992
New +$5.01M 0.01% 991
2020
Q4 		– Sell
-13,260
Closed -$840K – 2017
2020
Q3 		$840K Sell
13,260
-79,053
-86% -$5.87M 0.01% 1088
2020
Q2 		$7.13M Buy
92,313
+27,484
+42% +$2.01M 0.05% 382
2020
Q1 		$4.5M Buy
+64,829
New +$5.92M 0.05% 410
2019
Q4 		– Sell
-5,275
Closed -$470K – 1884
2019
Q3 		$470K Buy
+5,275
New +$473K ﹤0.01% 1121
2016
Q3 		– Sell
-14,706
Closed -$676K – 1035
2016
Q2 		$676K Buy
14,706
+431
+3% +$20.4K 0.01% 781
2016
Q1 		$619K Buy
+14,275
New +$660K 0.01% 816
2015
Q4 		– Sell
-9,534
Closed -$443K – 1044
2015
Q3 		$443K Buy
+9,534
New +$437K 0.01% 753

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 $3.38T AUM 44.17% 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

Marshall Wace's IOSP Position: Q2 2026 in Review

Marshall Wace reduced its Innospec (IOSP) stake by 31% in Q2 2026, selling an estimated $827K and leaving 23,075 shares worth $1.88M. The position accounts for ﹤0.01% of the portfolio, ranked #1900.

Marshall Wace first reported a position in IOSP in Q3 2015 and has held it in 11 quarters since. The position peaked at $7.13M in Q2 2020. 281 funds tracked by Wall St. Rank hold IOSP as of Q2 2026.

  • Marshall Wace held 23,075 shares of Innospec worth $1.88M as of Q2 2026.
  • Marshall Wace sold 10,451 Innospec shares in Q2 2026, an estimated $827K.
  • Innospec made up ﹤0.01% of Marshall Wace's portfolio in Q2 2026, its #1900 holding.
  • Marshall Wace first reported a position in Innospec in Q3 2015 and has held it in 11 quarters since.
  • Marshall Wace's Innospec position peaked at $7.13M in Q2 2020.
  • 281 funds tracked by Wall St. Rank held Innospec as of Q2 2026.

Based on Marshall Wace's 13F filing for Q2 2026, filed 13 Aug 2026.