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D. E. Shaw & Co., Inc.

Position in IOSP — Innospec Inc.

CIK 1009207 New York, NY

Position in IOSP

as of Mar 31, 2026 · filed May 15, 2026
Position Value
$20,941,697
-$2,780,115 QoQ
Shares Held
286,794
-7.5% QoQ
Ownership
1.16%
of shares outstanding
% of Portfolio
0.02%
of 13F equity value
Holder Rank
not a current holder
Holding Since
Mar 2020
25 quarters on record
Voting authority Sole 98.9190847786216.ToString("F0")% Shared 0.ToString("F0")% None 1.080915221378411.ToString("F0")%

Common Shares in IOSP Over Time

Shares Held

Position Value (USD)

Position in Specialty Chemicals

Basic Materials · as of Mar 31, 2026

D. E. Shaw & Co., Inc. holds $2,011,205,349 across 36 Specialty Chemicals names. IOSP ranks #16 (1.0% of the industry book) .

# Ticker Company Shares Value (USD) Open

All Filings in IOSP

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25 filing rows on record
Report Date Value (USD) Shares
2026-03-31 $20,941,697 286,794
2025-12-31 $23,721,812 309,927
2025-09-30 $21,134,509 273,905
2025-06-30 $14,441,447 171,738
2025-03-31 $9,387,451 99,076
2024-12-31 $4,185,801 38,032
2024-09-30 $1,489,282 13,169
2024-06-30 $892,690 7,223
2024-03-31 $1,028,554 7,977
2023-12-31 $1,233,385 10,008
2023-09-30 $1,944,866 19,030
2023-06-30 $2,242,925 22,331
2023-03-31 $1,611,302 15,694
2022-12-31 $1,849,834 17,984
2022-09-30 $1,214,029 14,171
2022-06-30 $665,548 6,948
2022-03-31 $2,776,592 30,001
2021-12-31 $5,598,550 61,972
2021-09-30 $5,900,200 70,057
2021-06-30 $3,015,410 33,279
2021-03-31 $672,311 6,547
2020-12-31 $1,642,484 18,103
2020-09-30 $2,071,323 32,712
2020-06-30 $1,353,111 17,516
2020-03-31 $1,229,764 17,697