Mariner
IOSP icon

Mariner’s Innospec IOSP Stock Holding History

Mariner’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 		$2.19M Buy
26,935
+7,225
+37% +$572K ﹤0.01% 1440
2026
Q1 		$1.44M Buy
19,710
+4,027
+26% +$314K ﹤0.01% 1717
2025
Q4 		$1.21M Buy
15,683
+10,121
+182% +$764K ﹤0.01% 1819
2025
Q3 		$429K Buy
+5,562
New +$464K ﹤0.01% 2550
2024
Q3 		– Sell
-2,624
Closed -$324K – 3345
2024
Q2 		$324K Buy
2,624
+873
+50% +$109K ﹤0.01% 2387
2024
Q1 		$226K Buy
+1,751
New +$213K ﹤0.01% 2662

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

Mariner's IOSP Position: Q2 2026 in Review

Mariner increased its Innospec (IOSP) stake by 37% in Q2 2026, buying an estimated $572K and bringing the position to 26,935 shares worth $2.19M. The position accounts for ﹤0.01% of the portfolio, ranked #1440.

Mariner first reported a position in IOSP in Q1 2024 and has held it in 6 quarters since. 282 funds tracked by Wall St. Rank hold IOSP as of Q2 2026.

  • Mariner held 26,935 shares of Innospec worth $2.19M as of Q2 2026.
  • Mariner bought 7,225 Innospec shares in Q2 2026, an estimated $572K.
  • Innospec made up ﹤0.01% of Mariner's portfolio in Q2 2026, its #1440 holding.
  • Mariner first reported a position in Innospec in Q1 2024 and has held it in 6 quarters since.
  • 282 funds tracked by Wall St. Rank held Innospec as of Q2 2026.

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