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Disclosery

IOSP INNOSPEC INC

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COM (common), issuer CIK 1054905

259 managers (266 13F filers) reported a position in IOSP shares at 2026-03-31, 24,941,065 shares in all. 34 filers opened a position and 31 filers sold out during the quarter.

Managers
259
13F filers
266
New
34
Added
114
Reduced
79
Sold out
31
Shares held by filers
24,941,065

Shares held by filers adds up every 13F filer's report, so a share reported by a parent and by its subsidiary counts twice (H9). Managers counts each filer group once.

13D and 13G filers

Each filer's latest stake. The shares are the aggregate the reporting persons state, which can include entities that file no 13F.

Insider trades

No Form 4 transaction on this security in the data.

13F holders, Q1 2026

Filers in the available 13F reports with a share position at 2026-03-31, filer groups collapsed to one row (method), largest first. Options and principal amounts are left out. A group row states no % of portfolio, since each member reports its own portfolio: the members' percents are listed under it. A value about 1,000 times or 1/1,000 of the price other filers imply is shown as filed but neither ranks the row nor enters a sum.

HolderSharesValue% of portfolioChangeSource
BNP PARIBAS ASSET MANAGEMENT Holding S.…in group BNP PARIBAS ASSET MANAGEMENT …616$45K<0.01%+15913F-HRTimelineGroup
DekaBank Deutsche Girozentrale515$38K<0.01%013F-HRTimeline
GAMMA Investing LLC517$37.8K<0.01%+40313F-HRTimeline
MEEDER ASSET MANAGEMENT INCin group Meeder Advisory Services, Inc.438$32K<0.01%-2,98713F-HRTimelineGroup
HANTZ FINANCIAL SERVICES, INC.420$31K<0.01%-15513F-HRTimelineThe filing omitted confidential holdings, a later amendment may add them.
CDKV HOLDINGS LLC400$29.2K0.03%013F-HRTimeline
NOMURA ASSET MANAGEMENT CO LTDin group NOMURA ASSET MANAGEMENT CO LTD370$27K<0.01%new13F-HRTimelineGroup
TSFG, LLC370$27K<0.01%013F-HRTimeline
Versant Capital Management, Inc332$24.2K<0.01%-10113F-HRTimeline
Quarry LP323$23.6K<0.01%+13313F-HRTimeline
Arax Advisory Partners303$22.4K<0.01%+19113F-HRTimeline
Rockefeller Capital Management L.P.in group Rockefeller Capital Managemen…297$21.7K<0.01%-43113F-HRTimelineGroup
OSAIC HOLDINGS, INC.in group OSAIC HOLDINGS, INC.297$21.7K<0.01%-2913F-HRTimelineGroup
Essential Partners LLC240$17.5K0.01%-23713F-HRTimeline
Covestor Ltd236$17K0.01%-22513F-HRTimeline
Crews Bank & Trust200$14.6K<0.01%013F-HRTimeline
ROTHSCHILD INVESTMENT LLC182$13.3K<0.01%+3113F-HRTimeline
Farther Finance Advisors, LLC179$13.2K<0.01%-1613F-HRTimeline
ZIONS BANCORPORATION, NATIONAL ASSOCIAT…177$12.9K<0.01%-113F-HRTimeline
Parallel Advisors, LLC168$12.3K<0.01%-10613F-HR/ATimeline
Root Financial Partners, LLC164$12K<0.01%+12513F-HRTimeline
BARROW HANLEY MEWHINNEY & STRAUSS LLC157$11.5K<0.01%013F-HRTimeline
HARBOR CAPITAL ADVISORS, INC.133$10K<0.01%+4713F-HRTimeline
US BANCORP \DE\in group US BANCORP \DE\135$9.86K<0.01%-9013F-HRTimelineGroup
Kilter Group LLC106$7.74K<0.01%+9013F-HRTimeline
IFP Advisors, Inc106$7.74K<0.01%-3513F-HRTimeline
STRS OHIO100$7.3K<0.01%013F-HRTimeline
BESSEMER GROUP INCin group BESSEMER GROUP INC105$7K<0.01%+3413F-HRTimelineGroup
Basecamp Wealth Advisors LLC91$6.64K<0.01%+4813F-HRTimeline
Advisory Services Network, LLC88$6.43K<0.01%new13F-HRTimeline
Private Wealth Asset Management, LLC63$4.6K<0.01%013F-HRTimeline
UMB Bank, n.a.57$4.16K<0.01%-16313F-HRTimelineThe filing omitted confidential holdings, a later amendment may add them.
True Wealth Design, LLC56$4.09K<0.01%+1813F-HRTimeline
QUADRANT CAPITAL GROUP LLC53$3.87K<0.01%-21113F-HR/ATimeline
SJS Investment Consulting Inc.45$3.29K<0.01%+3313F-HRTimeline
Mitsubishi UFJ Asset Management Co., Lt…in group Mitsubishi UFJ Trust & Bankin…42$3.07K<0.01%013F-HRTimelineGroup
Cedar Mountain Advisors, LLC39$2.85K<0.01%new13F-HRTimeline
Optiver Holding B.V.in group Optiver Holding B.V.30$2.19K<0.01%new13F-HR/ATimelineGroup
MassMutual Private Wealth & Trust, FSB29$2.12K<0.01%-9113F-HRTimeline
CVA Family Office, LLC28$2.04K<0.01%new13F-HRTimeline
High Note Wealth, LLC26$1.9K<0.01%new13F-HRTimeline
Larson Financial Group LLC24$1.75K<0.01%new13F-HRTimeline
Fortitude Family Office, LLC20$1.46K<0.01%+1613F-HRTimeline
JFS WEALTH ADVISORS, LLC18$1.31K<0.01%+1313F-HRTimeline
FARMERS & MERCHANTS INVESTMENTS INCin group FARMERS & MERCHANTS INVESTMEN…18$1.31K<0.01%013F-HRTimelineGroup
Bare Financial Services, Inc17$1.24K<0.01%new13F-HRTimeline
Keating Financial Advisory Services, In…10$730<0.01%+913F-HRTimeline
FIRST HORIZON CORP9$657<0.01%013F-HRTimeline
HARBOUR INVESTMENTS, INC.8$584<0.01%013F-HRTimeline
DiNuzzo Private Wealth, Inc.5$366<0.01%+413F-HRTimeline
WPG Advisers, LLC5$365<0.01%-513F-HRTimeline
GILPIN WEALTH MANAGEMENT, LLC4$293<0.01%new13F-HRTimeline
Ankerstar Wealth, LLC4$292<0.01%new13F-HRTimeline
Rialto Wealth Management, LLC3$220<0.01%+213F-HRTimeline
Abound Wealth Management2$147<0.01%013F-HRTimeline
HFM Investment Advisors, LLC2$146<0.01%+113F-HRTimeline
Vermillion Wealth Management, Inc.1$73<0.01%new13F-HRTimeline
Bay Harbor Wealth Management, LLC1$73<0.01%013F-HRTimeline
SBI Securities Co., Ltd.1$73<0.01%013F-HRTimeline

Events

  • Allspring Global Investments Holdings, LLC reported 1,161,421 IOSP shares, 4.7% of the class, as of 2026-09-30, in a 13G/A filed 2026-10-07. 0001890906-26-000074

    Accepted , ingested

  • Allspring Global Investments Holdings, LLC reported 1,161,421 IOSP shares, 4.7% of the class, as of 2026-09-30, in a 13G filed 2026-10-07. 0001890906-26-000068

    Accepted , ingested