Ken Griffin
IOSP icon

Ken Griffin’s Innospec IOSP Stock Holding History

Ken Griffin’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
2025
Q2 		– Sell
-1,100
Closed -$104K – 13758
2025
Q1 		$104K Buy
1,100
+1,000
+1,000% +$106K ﹤0.01% 11396
2024
Q4 		$11K Sell
100
-1,100
-92% -$126K ﹤0.01% 13572
2024
Q3 		$136K Buy
+1,200
New +$140K ﹤0.01% 10691
2024
Q2 		– Sell
-100
Closed -$12.9K – 14825
2024
Q1 		$12.9K Sell
100
-500
-83% -$60.7K ﹤0.01% 13330
2023
Q4 		$73.9K Sell
600
-200
-25% -$21.3K ﹤0.01% 11321
2023
Q3 		$81.8K Buy
+800
New +$83.6K ﹤0.01% 11150
2023
Q1 		– Sell
-900
Closed -$92.6K – 15079
2022
Q4 		$92.6K Buy
+900
New +$91.4K ﹤0.01% 11331
2022
Q3 		– Sell
-7,000
Closed -$671K – 13089
2022
Q2 		$671K Buy
+7,000
New +$680K ﹤0.01% 7986
2020
Q4 		– Sell
-9,900
Closed -$627K – 11205
2020
Q3 		$627K Buy
+9,900
New +$735K ﹤0.01% 6874
2020
Q1 		– Sell
-3,300
Closed -$341K – 9865
2019
Q4 		$341K Buy
+3,300
New +$316K ﹤0.01% 7396
2018
Q4 		– Sell
-7,600
Closed -$583K – 9430
2018
Q3 		$583K Hold
7,600
– – ﹤0.01% 6452
2018
Q2 		$582K Buy
7,600
+4,400
+138% +$330K ﹤0.01% 6120
2018
Q1 		$220K Buy
+3,200
New +$223K ﹤0.01% 7208
2016
Q1 		– Sell
-3,400
Closed -$185K – 7337
2015
Q4 		$185K Buy
3,400
+1,200
+55% +$66.2K ﹤0.01% 5906
2015
Q3 		$102K Sell
2,200
-1,700
-44% -$77.9K ﹤0.01% 6940
2015
Q2 		$176K Buy
3,900
+400
+11% +$17.9K ﹤0.01% 6479
2015
Q1 		$162K Buy
3,500
+3,000
+600% +$129K ﹤0.01% 6405
2014
Q4 		$21K Hold
500
– – ﹤0.01% 7761
2014
Q3 		$18K Buy
500
+400
+400% +$16.2K ﹤0.01% 7522
2014
Q2 		$4K Buy
+100
New +$4.31K ﹤0.01% 7758

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
VPM
Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM
Dimensional Fund Advisors
Dimensional Fund Advisors Austin, Texas $552B AUM 44.19% 1-Year Est. Return
VCM
Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM
State Street
State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return
Victory Capital Management
Victory Capital Management San Antonio, Texas $178B AUM 37.23% 1-Year Est. Return
N
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
Two Sigma Investments
Two Sigma Investments New York $124B AUM 33.93% 1-Year Est. Return

Ken Griffin's IOSP Position: Q1 2026 in Review

Ken Griffin increased its Innospec (IOSP) stake by 204% in Q1 2026, buying an estimated $11.5M and bringing the position to 220,883 shares worth $16.1M. The position accounts for ﹤0.01% of the portfolio, ranked #2602.

Ken Griffin first reported a position in IOSP in Q2 2013 and has held it in 47 quarters since. 266 funds tracked by Wall St. Rank hold IOSP as of Q1 2026.

  • Ken Griffin held 220,883 shares of Innospec worth $16.1M as of Q1 2026.
  • Ken Griffin bought 148,189 Innospec shares in Q1 2026, an estimated $11.5M.
  • Innospec made up ﹤0.01% of Ken Griffin's portfolio in Q1 2026, its #2602 holding.
  • Ken Griffin first reported a position in Innospec in Q2 2013 and has held it in 47 quarters since.
  • 266 funds tracked by Wall St. Rank held Innospec as of Q1 2026.

Based on Citadel Advisors's 13F filing for Q1 2026, filed 15 May 2026.