NEU Institutional Ownership & Shareholders
NEWMARKET CORP (NEU) is currently held by 425 institutional investors tracked by InsiderSet, with a combined reported market value of approximately $4.73B based on the latest available SEC Form 13F filings for the quarter ended June 30, 2026.
Blackrock, Inc. is currently the largest disclosed institutional shareholder of NEU tracked by InsiderSet, reporting ownership valued at approximately $556.34M in its June 30, 2026 SEC Form 13F filing. Based on current market prices and the latest disclosed share count, the position is now estimated to be worth approximately $551.01M, representing an estimated loss of -0.96% since the filing period.
The top 10 institutional shareholders tracked on this page collectively account for approximately 58% of the total disclosed NEU value among the investors covered in this analysis. Major shareholders include Blackrock, Inc., London Co Of Virginia, Vanguard Portfolio Management Llc, and several other long-term asset managers with concentrated positions in NEWMARKET CORP (NEU).
This page ranks the largest institutional NEU shareholders using publicly disclosed SEC Form 13F data, including reported values, estimated current holding values, portfolio allocation percentages, ownership concentration metrics, and historical holding changes across major hedge funds and investment firms.
Institutional Holders
425
Total Reported Value
$4.73B
Largest Holder
Blackrock, Inc.
Largest Position
$556.34M
Insider Transactions (90d)
2
Latest Filing Quarter
Q2 2026
New Institutional Positions
77
Funds Exiting Positions
0
| Name | Investor/Manager | Portfolio % | Quantity | Reported Balance | Current Estimated Value | Gain/loss Since Filing | Estimated Portfolio Performance |
|---|---|---|---|---|---|---|---|
| Blackrock, Inc. | 0.01% | 703,123 | $556,338,856 | $551,009,370 | -$5,329,486 | -0.96% | |
| London Co Of Virginia | 2.20% | 488,482 | $386,512,687 | $382,803,804 | -$3,708,883 | -0.96% | |
| Vanguard Portfolio Management Llc | 0.01% | 416,063 | $329,205,688 | $326,051,931 | -$3,153,757 | -0.96% | |
| Vanguard Capital Management Llc | 0.01% | 348,834 | $276,011,414 | $273,367,252 | -$2,644,162 | -0.96% | |
| Boston Partners | 0.23% | 323,902 | $256,000,174 | $253,829,041 | -$2,171,133 | -0.85% | |
| Aqr Capital Management Llc | 0.07% | 270,011 | $213,643,549 | $211,596,820 | -$2,046,729 | -0.96% | |
| Lsv Asset Management | 0.34% | 237,762 | $188,127,000 | $186,324,569 | -$1,802,431 | -0.96% | |
| State Street Corp | 0.01% | 234,065 | $185,905,105 | $183,427,378 | -$2,477,727 | -1.33% | |
| American Century Companies Inc | 0.07% | 209,436 | $165,714,141 | $164,126,616 | -$1,587,525 | -0.96% | |
| Dimensional Fund Advisors Lp | 0.03% | 205,661 | $162,727,587 | $161,168,299 | -$1,559,288 | -0.96% | |
| Geode Capital Management, Llc | 0.01% | 190,942 | $151,108,733 | $149,633,608 | -$1,475,125 | -0.98% | |
| Gotham Asset Management, Llc | 0.24% | 130,865 | $103,545,623 | $102,553,666 | -$991,957 | -0.96% | |
| Charles Schwab Investment Management Inc | 0.01% | 102,184 | $80,852,068 | $80,077,513 | -$774,555 | -0.96% | |
| Morgan Stanley | 0.00% | 98,334 | $77,807,838 | $77,060,422 | -$747,416 | -0.96% | |
| Caisse De Depot Et Placement Du Quebec | 0.10% | 91,650 | $72,517,146 | $71,822,439 | -$694,707 | -0.96% | |
| Price T Rowe Associates Inc | 0.01% | 85,978 | $68,031,000 | $67,377,519 | -$653,481 | -0.96% | |
| Northern Trust Corp | 0.01% | 82,458 | $65,244,068 | $64,619,036 | -$625,032 | -0.96% | |
| Norges Bank | 0.01% | 82,266 | $65,092,150 | $64,468,574 | -$623,576 | -0.96% | |
| Goldman Sachs Group Inc | 0.01% | 73,501 | $58,157,044 | $57,599,794 | -$557,250 | -0.96% | |
| Invesco Ltd. | 0.00% | 73,081 | $57,824,610 | $57,270,656 | -$553,954 | -0.96% | |
| Bank Of New York Mellon Corp | 0.01% | 71,085 | $56,244,921 | $55,706,471 | -$538,450 | -0.96% | |
| Bank Of America Corp | 0.00% | 60,849 | $48,145,768 | $47,684,927 | -$460,841 | -0.96% | |
| Ubs Group Ag | 0.01% | 59,120 | $46,778,109 | $46,329,979 | -$448,130 | -0.96% | |
| Jpmorgan Chase & Co | 0.00% | 55,231 | $43,912,487 | $43,282,325 | -$630,162 | -1.44% | |
| Arrowstreet Capital, Limited Partnership | 0.02% | 54,629 | $43,224,650 | $42,810,562 | -$414,088 | -0.96% | |
| Natixis Advisors, Llc | 0.04% | 50,211 | $39,729,000 | $39,348,352 | -$380,648 | -0.96% | |
| Vanguard Fiduciary Trust Co | 0.01% | 48,244 | $38,172,583 | $37,806,893 | -$365,690 | -0.96% | |
| Jones Financial Companies Lllp | 0.02% | 47,595 | $37,733,952 | $37,298,298 | -$435,654 | -1.15% | |
| First Trust Advisors Lp | 0.02% | 44,373 | $35,109,692 | $34,773,345 | -$336,347 | -0.96% | |
| Hb Wealth Management, Llc | 0.16% | 33,592 | $30,149,492 | $26,324,707 | -$3,824,785 | -12.69% | |
| Envestnet Asset Management Inc | 0.01% | 34,157 | $27,026,046 | $26,767,475 | -$258,571 | -0.96% | |
| Millennium Management Llc | 0.02% | 31,763 | $25,132,156 | $24,891,393 | -$240,763 | -0.96% | |
| Allianz Asset Management Gmbh | 0.02% | 31,379 | $24,828,320 | $24,590,467 | -$237,853 | -0.96% | |
| Davenport & Co Llc | 0.12% | 26,279 | $23,631,177 | $20,593,801 | -$3,037,376 | -12.85% | |
| Retirement Systems Of Alabama | 0.07% | 29,095 | $23,021,128 | $22,800,588 | -$220,540 | -0.96% | |
| Wells Fargo & Company/Mn | 0.00% | 26,714 | $21,137,054 | $20,934,693 | -$202,361 | -0.96% | |
| Federated Hermes, Inc. | 0.03% | 24,224 | $19,166,999 | $18,983,380 | -$183,619 | -0.96% | |
| Rhumbline Advisers | 0.01% | 22,644 | $17,916,786 | $17,745,197 | -$171,589 | -0.96% | |
| Los Angeles Capital Management Llc | 0.06% | 21,989 | $17,398,576 | $17,231,900 | -$166,676 | -0.96% | |
| Eubel Brady & Suttman Asset Management Inc | 1.89% | 20,124 | $15,923,000 | $15,770,374 | -$152,626 | -0.96% | |
| Principal Financial Group Inc | 0.01% | 17,509 | $15,714,678 | $13,721,103 | -$1,993,575 | -12.69% | |
| Jane Street Group, Llc | 0.01% | 18,784 | $14,862,653 | $14,720,269 | -$142,384 | -0.96% | |
| Royal Bank Of Canada | 0.00% | 17,719 | $14,021,000 | $13,885,672 | -$135,328 | -0.97% | |
| Swiss National Bank | 0.01% | 15,100 | $11,947,724 | $11,833,266 | -$114,458 | -0.96% | |
| Gamco Investors, Inc. Et Al | 0.10% | 14,500 | $11,472,980 | $11,363,070 | -$109,910 | -0.96% | |
| Ubs Am, A Distinct Business Unit Of Ubs Asset Management Americas Llc | 0.00% | 17,461 | $11,191,628 | $13,683,487 | +$2,491,859 | +22.27% | |
| Citigroup Inc | 0.00% | 13,283 | $10,510,042 | $10,409,356 | -$100,686 | -0.96% | |
| Quantinno Capital Management Lp | 0.01% | 13,155 | $10,408,857 | $10,309,047 | -$99,810 | -0.96% | |
| Susquehanna Portfolio Strategies, Llc | 0.17% | 13,132 | $10,390,564 | $10,291,023 | -$99,541 | -0.96% | |
| Nuveen, Llc | 0.00% | 12,790 | $10,119,318 | $10,023,011 | -$96,307 | -0.95% |
Frequently asked questions about NEU
Who are the largest institutional holders of NEU?
The largest institutional holders of NEU reported in the latest SEC Form 13F filings include Blackrock, Inc., London Co Of Virginia, Vanguard Portfolio Management Llc, Vanguard Capital Management Llc, and Boston Partners. InsiderSet ranks institutional holders by their latest reported NEU position.
What is NEU institutional ownership?
This page tracks NEU positions reported by institutional investment managers through SEC Form 13F. NEWMARKET CORP (NEU) institutional ownership on InsiderSet reflects disclosed 13F holdings among the managers we analyze, not every shareholder of the stock.
How many institutions own NEU?
InsiderSet currently tracks 425 institutional managers reporting NEU holdings in the latest available 13F data. This count reflects institutions included in the SEC Form 13F filings analyzed by InsiderSet and should not be interpreted as the total number of NEU shareholders.
How much NEU stock do institutions own?
Institutional investment managers disclosed approximately $4.73B in NEU holdings for Q2 2026. This figure is reported 13F value as of the filing period, not necessarily today's market value.
When was NEU institutional ownership last updated?
The latest NEU institutional ownership data on InsiderSet is based on SEC Form 13F filings for the quarter ended June 30, 2026. Form 13F filings are generally reported after the quarter ends, so the holdings shown represent the latest publicly disclosed positions rather than real-time institutional holdings.
Are institutional NEU holdings real-time?
No. Form 13F data is not real-time. It represents positions reported by institutional investment managers as of the end of the reporting quarter. An institution may have changed its NEU position after the reporting date.
Are institutions buying or selling NEU?
Institutional buying and selling can be analyzed by comparing NEU positions across consecutive 13F reporting periods. InsiderSet's NEU Ownership Changes page shows institutions that increased, reduced, initiated, or exited positions based on reported 13F holdings. View NEU ownership changes.
How has NEU institutional ownership changed over time?
InsiderSet tracks NEU institutional holdings across multiple 13F reporting periods, allowing investors to compare institutional holder counts, reported value, and reported shares over time.