# NEWMARKET CORP COM

NEWMARKET CORP COM is a security (CUSIP 651587107) tracked across SEC portfolio filings. 419 institutional managers reported $3.5B on Form 13F as of 2026-06-30; 27 registered fund positions totaling $233.0M via N-PORT as of 2026-05-31.

## Summary

- Issuer: NEWMARKET CORP
- Class: COM
- CUSIP: 651587107
- Asset category: EC
- 13F holders: 419
- 13F value: $3.5B
- 13F period: 2026-06-30
- N-PORT fund positions: 27
- N-PORT value: $233.0M
- N-PORT report: 2026-05-31

## Top institutional holders (Form 13F)

_Showing 15 of 419 managers by value._

| Manager | Location | Value | Shares |
| --- | --- | --- | --- |
| [VANGUARD GROUP INC](https://search.stillhousedata.com/firm/105958) | Valley Forge, PA | $569.6M | 828,798 |
| BlackRock, Inc. | New York, NY | $459.4M | 716,683 |
| [LONDON CO OF VIRGINIA](https://search.stillhousedata.com/firm/106654) | RICHMOND, VA | $295.5M | 461,027 |
| Boston Partners | BOSTON, MA | $256.0M | 323,902 |
| STATE STREET CORP | BOSTON, MA | $150.4M | 233,643 |
| DIMENSIONAL FUND ADVISORS LP | AUSTIN, TX | $124.7M | 194,507 |
| [GEODE CAPITAL MANAGEMENT, LLC](https://search.stillhousedata.com/firm/115504) | BOSTON, MA | $118.4M | 184,730 |
| AMERICAN CENTURY COMPANIES INC | KANSAS CITY, MO | $108.1M | 168,644 |
| CAISSE DE DEPOT ET PLACEMENT DU QUEBEC | MONTREAL, A8 | $85.9M | 133,971 |
| [AQR CAPITAL MANAGEMENT LLC](https://search.stillhousedata.com/firm/111883) | Greenwich, CT | $75.1M | 118,341 |
| [CHARLES SCHWAB INVESTMENT MANAGEMENT INC](https://search.stillhousedata.com/firm/106753) | SAN FRANCISCO, CA | $65.9M | 102,845 |
| UBS Group AG | Zurich, V8 | $63.4M | 98,848 |
| MORGAN STANLEY | NEW YORK, NY | $59.9M | 93,471 |
| Bank of New York Mellon Corp | NEW YORK, NY | $56.2M | 71,085 |
| MILLENNIUM MANAGEMENT LLC | NEW YORK, NY | $55.1M | 86,024 |

## Top fund holders (N-PORT)

_Showing 15 of 27 fund positions by value._

| Fund | Registrant | Value | % of fund |
| --- | --- | --- | --- |
| State Street SPDR S&P MidCap 400SM ETF Trust | SPDR S&P MIDCAP 400 ETF TRUST | $150.7M | 62.24% |
| [VANGUARD EXTENDED MARKET INDEX FUND](https://search.stillhousedata.com/fund/S000002841) | VANGUARD INDEX FUNDS | $55.8M | 6.85% |
| [Columbia Mid Cap Index Fund](https://search.stillhousedata.com/fund/S000010826) | COLUMBIA FUNDS SERIES TRUST | $4.3M | 16.96% |
| [VANGUARD BALANCED INDEX FUND](https://search.stillhousedata.com/fund/S000002560) | VANGUARD VALLEY FORGE FUNDS | $2.9M | 0.49% |
| [VANGUARD INSTITUTIONAL TOTAL STOCK MARKET INDEX FUND](https://search.stillhousedata.com/fund/S000002855) | VANGUARD INSTITUTIONAL INDEX FUNDS | $2.5M | 0.81% |
| [Large Cap Index Master Portfolio](https://search.stillhousedata.com/fund/S000033023) | Master Investment Portfolio | $2.2M | 0.62% |
| [BNY Mellon Midcap Index Fund, Inc.](https://search.stillhousedata.com/fund/S000000078) | BNY MELLON MIDCAP INDEX FUND, INC. | $2.1M | 15.42% |
| [Disciplined Value Fund](https://search.stillhousedata.com/fund/S000005979) | American Century Quantitative Equity Funds, Inc. | $1.9M | 10.26% |
| [LSV Disciplined Value ETF](https://search.stillhousedata.com/fund/S000089218) | ADVISORS' INNER CIRCLE FUND | $1.9M | 31.02% |
| [Mid Cap Index Trust](https://search.stillhousedata.com/fund/S000008285) | John Hancock Variable Insurance Trust | $1.8M | 15.21% |
| VOYA GLOBAL EQUITY DIVIDEND & PREMIUM OPPORTUNITY FUND | Voya Global Equity Dividend & Premium Opportunity Fund | $1.5M | 31.04% |
| [Hartford Multifactor US Equity ETF](https://search.stillhousedata.com/fund/S000047586) | Lattice Strategies Trust | $1.1M | 18.32% |
| [BlackRock Advantage SMID Cap Fund, Inc.](https://search.stillhousedata.com/fund/S000002323) | BlackRock Advantage SMID Cap Fund, Inc. | $940K | 12.44% |
| [GMO U.S. Equity Fund](https://search.stillhousedata.com/fund/S000004081) | GMO TRUST | $537K | 24.39% |
| [Longview Advantage ETF](https://search.stillhousedata.com/fund/S000086399) | RBB Fund Trust | $520K | 7.92% |

## More

- [This page as markdown (for LLM agents)](https://search.stillhousedata.com/security/651587107.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.