JY
IOSP icon

Jeff Yass’s Innospec IOSP Stock Holding History

Jeff Yass’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 		– Sell
-150,600
Closed -$11.5M – 13605
2025
Q4 		$11.5M Buy
150,600
+400
+0.3% +$30.2K ﹤0.01% 2877
2025
Q3 		$11.6M Buy
+150,200
New +$12.5M ﹤0.01% 2860
2025
Q1 		– Sell
-4,500
Closed -$495K – 12950
2024
Q4 		$495K Buy
4,500
+100
+2% +$11.4K ﹤0.01% 8688
2024
Q3 		$498K Buy
+4,400
New +$512K ﹤0.01% 8475
2021
Q3 		– Sell
-3,200
Closed -$290K – 13132
2021
Q2 		$290K Buy
3,200
+1,100
+52% +$109K ﹤0.01% 10828
2021
Q1 		$216K Sell
2,100
-1,500
-42% -$148K ﹤0.01% 11282
2020
Q4 		$327K Sell
3,600
-1,100
-23% -$85.3K ﹤0.01% 9099
2020
Q3 		$298K Buy
+4,700
New +$349K ﹤0.01% 8716
2020
Q2 		– Sell
-4,700
Closed -$327K – 10499
2020
Q1 		$327K Sell
4,700
-300
-6% -$27.4K ﹤0.01% 7813
2019
Q4 		$517K Sell
5,000
-600
-11% -$57.4K ﹤0.01% 6922
2019
Q3 		$499K Buy
5,600
+500
+10% +$44.8K ﹤0.01% 7308
2019
Q2 		$465K Buy
+5,100
New +$430K ﹤0.01% 7411
2019
Q1 		– Sell
-6,600
Closed -$408K – 9320
2018
Q4 		$408K Buy
6,600
+2,900
+78% +$200K ﹤0.01% 6404
2018
Q3 		$284K Buy
+3,700
New +$288K ﹤0.01% 7588
2018
Q2 		– Sell
-4,200
Closed -$288K – 9978
2018
Q1 		$288K Buy
+4,200
New +$292K ﹤0.01% 7693
2017
Q2 		– Sell
-5,400
Closed -$350K – 9480
2017
Q1 		$350K Sell
5,400
-2,600
-33% -$174K ﹤0.01% 7108
2016
Q4 		$548K Buy
+8,000
New +$515K ﹤0.01% 6793

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

Jeff Yass's IOSP Position: Q2 2026 in Review

Jeff Yass reduced its Innospec (IOSP) stake by 66% in Q2 2026, selling an estimated $544K and leaving 3,615 shares worth $294K. The position accounts for ﹤0.01% of the portfolio, ranked #11082.

Jeff Yass first reported a position in IOSP in Q2 2013 and has held it in 45 quarters since. The position peaked at $3.8M in Q4 2015. 280 funds tracked by Wall St. Rank hold IOSP as of Q2 2026.

  • Jeff Yass held 3,615 shares of Innospec worth $294K as of Q2 2026.
  • Jeff Yass sold 6,877 Innospec shares in Q2 2026, an estimated $544K.
  • Innospec made up ﹤0.01% of Jeff Yass's portfolio in Q2 2026, its #11082 holding.
  • Jeff Yass first reported a position in Innospec in Q2 2013 and has held it in 45 quarters since.
  • Jeff Yass's Innospec position peaked at $3.8M in Q4 2015.
  • 280 funds tracked by Wall St. Rank held Innospec as of Q2 2026.

Based on Susquehanna International Group's 13F filing for Q2 2026, filed 14 Aug 2026.