INNOSPEC INC.

PublicCIK: 1054905
IOSPNASDAQ
Location

ENGLEWOOD, CO

13F Filings

Institutional Holders

INNOSPEC INC.IOSP— Latest position per institution from SEC 13F filings

15

Institutional holders

27.06M

Total shares held

2.18B

Estimated value

1.35M

Avg. position size

1

BLACKROCK, INC.

CIK 2012383

Shares

4.38M

Value

356.60M

Filed

Jun 30, 2026

2

BLACKROCK FINANCE, INC.

CIK 1364742

Shares

3.91M

Value

482.97M

Filed

Jun 30, 2024

3

VANGUARD GROUP INC

CIK 102909

Shares

3.12M

Value

238.89M

Filed

Dec 31, 2025

4

CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM

CIK 1081019

Shares

2.26M

Value

27.77K

Filed

Jun 30, 2026

5

ALLSPRING GLOBAL INVESTMENTS HOLDINGS, LLC

CIK 1890906

Shares

1.89M

Value

154.75M

Filed

Jun 30, 2026

6

VANGUARD PORTFOLIO MANAGEMENT LLC

CIK 2100121

Shares

1.88M

Value

153.36M

Filed

Jun 30, 2026

7

DIMENSIONAL FUND ADVISORS LP

CIK 354204

Shares

1.31M

Value

106.22M

Filed

Jun 30, 2026

8

VANGUARD CAPITAL MANAGEMENT LLC

CIK 2100119

Shares

1.11M

Value

90.19M

Filed

Jun 30, 2026

9

STATE STREET CORP

CIK 93751

Shares

996.03K

Value

81.07M

Filed

Jun 30, 2026

10

NUVEEN, LLC

CIK 1871926

Shares

755.72K

Value

61.51M

Filed

Jun 30, 2026

11

GEODE CAPITAL MANAGEMENT, LLC

CIK 1214717

Shares

666.59K

Value

54.26M

Filed

Jun 30, 2026

12

GOLDMAN SACHS GROUP INC

CIK 886982

Shares

662.21K

Value

53.90M

Filed

Jun 30, 2026

13

VICTORY CAPITAL MANAGEMENT INC

CIK 1040188

Shares

660.11K

Value

53.73M

Filed

Jun 30, 2026

14

TWO SIGMA INVESTMENTS, LP

CIK 1179392

Shares

568.71K

Value

46.29M

Filed

Jun 30, 2026

15

WASATCH ADVISORS LP

CIK 814133

Shares

528.14K

Value

50.04M

Filed

Mar 31, 2025

16

WESTWOOD HOLDINGS GROUP INC

CIK 1165002

Shares

491.45K

Value

37.62M

Filed

Dec 31, 2025

17

PACER ADVISORS, INC.

CIK 1616667

Shares

485.71K

Value

53.46M

Filed

Dec 31, 2024

18

AQR CAPITAL MANAGEMENT LLC

CIK 1167557

Shares

482.55K

Value

39.27M

Filed

Jun 30, 2026

19

NUVEEN ASSET MANAGEMENT, LLC

CIK 1521019

Shares

471.10K

Value

51.85M

Filed

Dec 31, 2024

20

FINANCIAL HARVEST, LLC

CIK 2052933

Shares

433.84K

Value

12.63M

Filed

Mar 31, 2025

Data sourced from SEC Form 13F institutional holdings reports. Positions reflect the most recent filing per institution.