# INNOSPEC INC COM

INNOSPEC INC COM is a security (CUSIP 45768S105) tracked across SEC portfolio filings. 277 institutional managers reported $1.8B on Form 13F as of 2026-06-30; 24 registered fund positions totaling $58.0M via N-PORT as of 2026-05-31.

## Summary

- Issuer: INNOSPEC INC
- Class: COM
- CUSIP: 45768S105
- Asset category: EC
- 13F holders: 277
- 13F value: $1.8B
- 13F period: 2026-06-30
- N-PORT fund positions: 24
- N-PORT value: $58.0M
- N-PORT report: 2026-05-31

## Top institutional holders (Form 13F)

_Showing 15 of 277 managers by value._

| Manager | Location | Value | Shares |
| --- | --- | --- | --- |
| BlackRock, Inc. | New York, NY | $283.2M | 3,878,975 |
| [VANGUARD GROUP INC](https://search.stillhousedata.com/firm/105958) | Valley Forge, PA | $238.9M | 3,121,151 |
| Allspring Global Investments Holdings, LLC | CHARLOTTE, NC | $170.5M | 2,315,942 |
| DIMENSIONAL FUND ADVISORS LP | AUSTIN, TX | $90.7M | 1,242,089 |
| STATE STREET CORP | BOSTON, MA | $70.4M | 964,335 |
| VICTORY CAPITAL MANAGEMENT INC | San Antonio, TX | $63.2M | 864,994 |
| Nuveen, LLC | CHARLOTTE, NC | $47.0M | 643,248 |
| [GEODE CAPITAL MANAGEMENT, LLC](https://search.stillhousedata.com/firm/115504) | BOSTON, MA | $46.1M | 630,592 |
| [TWO SIGMA INVESTMENTS, LP](https://search.stillhousedata.com/firm/137137) | New York, NY | $43.3M | 593,039 |
| UBS Group AG | Zurich, V8 | $41.3M | 565,911 |
| GOLDMAN SACHS GROUP INC | NEW YORK, NY | $35.9M | 492,011 |
| JPMORGAN CHASE & CO | NEW YORK, NY | $31.2M | 426,050 |
| [Qube Research & Technologies Ltd](https://search.stillhousedata.com/firm/304552) | LONDON, X0 | $29.7M | 406,624 |
| [CHARLES SCHWAB INVESTMENT MANAGEMENT INC](https://search.stillhousedata.com/firm/106753) | SAN FRANCISCO, CA | $26.7M | 365,874 |
| [AQR CAPITAL MANAGEMENT LLC](https://search.stillhousedata.com/firm/111883) | Greenwich, CT | $22.8M | 312,065 |

## Top fund holders (N-PORT)

_Showing 15 of 24 fund positions by value._

| Fund | Registrant | Value | % of fund |
| --- | --- | --- | --- |
| [VANGUARD EXTENDED MARKET INDEX FUND](https://search.stillhousedata.com/fund/S000002841) | VANGUARD INDEX FUNDS | $20.2M | 2.48% |
| [VANGUARD RUSSELL 2000 INDEX FUND](https://search.stillhousedata.com/fund/S000030003) | VANGUARD SCOTTSDALE FUNDS | $10.6M | 6.04% |
| [U.S. MICRO CAP PORTFOLIO](https://search.stillhousedata.com/fund/S000000948) | DFA INVESTMENT DIMENSIONS GROUP INC | $6.8M | 9.11% |
| [VANGUARD STRATEGIC EQUITY FUND](https://search.stillhousedata.com/fund/S000002593) | VANGUARD HORIZON FUNDS | $4.5M | 4.49% |
| [VANGUARD EXPLORER FUND](https://search.stillhousedata.com/fund/S000002578) | VANGUARD EXPLORER FUND | $3.4M | 1.55% |
| [Master Small Cap Index Series](https://search.stillhousedata.com/fund/S000002716) | Quantitative Master Series LLC | $2.9M | 6.05% |
| ROYCE SMALL-CAP TRUST, INC. | ROYCE SMALL-CAP TRUST, INC. | $2.6M | 11.69% |
| [VANGUARD BALANCED INDEX FUND](https://search.stillhousedata.com/fund/S000002560) | VANGUARD VALLEY FORGE FUNDS | $1.0M | 0.18% |
| [BNY Mellon Smallcap Stock Index Fund](https://search.stillhousedata.com/fund/S000000132) | BNY MELLON INDEX FUNDS, INC. | $942K | 11.11% |
| [VANGUARD INSTITUTIONAL TOTAL STOCK MARKET INDEX FUND](https://search.stillhousedata.com/fund/S000002855) | VANGUARD INSTITUTIONAL INDEX FUNDS | $842K | 0.28% |
| ROYCE GLOBAL TRUST, INC. | ROYCE GLOBAL TRUST, INC. | $841K | 81.42% |
| [Fidelity Nasdaq Composite Index ETF](https://search.stillhousedata.com/fund/S000006011) | Fidelity Commonwealth Trust | $804K | 0.74% |
| [BlackRock Advantage SMID Cap Fund, Inc.](https://search.stillhousedata.com/fund/S000002323) | BlackRock Advantage SMID Cap Fund, Inc. | $606K | 8.02% |
| [Goldman Sachs ActiveBeta(R) U.S. Small Cap Equity ETF](https://search.stillhousedata.com/fund/S000048296) | Goldman Sachs ETF Trust | $577K | 5.85% |
| [VANGUARD GROWTH AND INCOME FUND](https://search.stillhousedata.com/fund/S000002913) | VANGUARD QUANTITATIVE FUNDS | $467K | 0.28% |

## More

- [This page as markdown (for LLM agents)](https://search.stillhousedata.com/security/45768S105.md)
- [Search all SEC filings, advisers and people on Adviser Search](https://search.stillhousedata.com/)

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Source: public SEC filing data via Adviser Search (https://search.stillhousedata.com).
Agents: this data is also queryable via MCP tools and read-only SQL — see https://search.stillhousedata.com/llms.txt.