NEWMARKET CORP (NEU) Institutional Shareholders
NEWMARKET CORP (NEU) is currently reported in institutional portfolios tracked by InsiderSet based on the latest available SEC Form 13F filings for the quarter ended June 30, 2026. The institutional investors covered on this page collectively reported approximately $3.39B in NEU holdings during the latest filing period.
Blackrock, Inc. is currently the largest disclosed institutional shareholder of NEU tracked by InsiderSet, reporting ownership valued at approximately $459.36M in its March 31, 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 $609.30M, representing an estimated gain of +32.64% since the filing period.
The top 10 institutional shareholders tracked on this page collectively account for approximately 60% 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
387
Total Reported Value
$3.39B
Largest Holder
Blackrock, Inc.
Largest Position
$459.36M
Insider Transactions (90d)
7
Latest Filing Quarter
Q2 2026
New Institutional Positions
65
Funds Exiting Positions
1
| Name | Investor/Manager | Portfolio % | Quantity | Reported Balance | Current Estimated Value | Gain/loss Since Filing | Estimated Portfolio Performance |
|---|---|---|---|---|---|---|---|
| Blackrock, Inc. | 0.01% | 716,683 | $459,357,479 | $609,295,219 | +$149,937,740 | +32.64% | |
| London Co Of Virginia | 1.82% | 461,027 | $295,505,197 | $391,946,714 | +$96,441,517 | +32.64% | |
| Vanguard Portfolio Management Llc | 0.02% | 450,480 | $288,735,156 | $382,980,077 | +$94,244,921 | +32.64% | |
| Vanguard Capital Management Llc | 0.01% | 354,291 | $227,082,817 | $301,204,037 | +$74,121,220 | +32.64% | |
| Boston Partners | 0.17% | 251,122 | $160,931,263 | $213,493,880 | +$52,562,617 | +32.66% | |
| State Street Corp | 0.01% | 233,643 | $150,426,345 | $198,633,933 | +$48,207,588 | +32.05% | |
| Dimensional Fund Advisors Lp | 0.03% | 194,507 | $124,658,409 | $165,362,071 | +$40,703,662 | +32.65% | |
| Geode Capital Management, Llc | 0.01% | 184,730 | $118,424,996 | $157,050,057 | +$38,625,061 | +32.62% | |
| American Century Companies Inc | 0.06% | 168,644 | $108,092,372 | $143,374,383 | +$35,282,011 | +32.64% | |
| Caisse De Depot Et Placement Du Quebec | 0.14% | 133,971 | $85,868,712 | $113,896,785 | +$28,028,073 | +32.64% | |
| Aqr Capital Management Llc | 0.03% | 118,341 | $75,143,753 | $100,608,785 | +$25,465,032 | +33.89% | |
| Charles Schwab Investment Management Inc | 0.01% | 102,845 | $65,918,503 | $87,434,705 | +$21,516,202 | +32.64% | |
| Ubs Group Ag | 0.01% | 98,848 | $63,356,625 | $84,036,616 | +$20,679,991 | +32.64% | |
| Morgan Stanley | 0.00% | 93,471 | $59,910,948 | $79,465,305 | +$19,554,357 | +32.64% | |
| Millennium Management Llc | 0.04% | 86,024 | $55,137,083 | $73,134,164 | +$17,997,081 | +32.64% | |
| Northern Trust Corp | 0.01% | 82,168 | $52,665,580 | $69,855,947 | +$17,190,367 | +32.64% | |
| Bank Of New York Mellon Corp | 0.01% | 76,249 | $48,871,591 | $64,823,850 | +$15,952,259 | +32.64% | |
| Invesco Ltd. | 0.01% | 74,729 | $47,897,552 | $63,531,607 | +$15,634,055 | +32.64% | |
| Arrowstreet Capital, Limited Partnership | 0.02% | 54,612 | $35,003,561 | $46,428,938 | +$11,425,377 | +32.64% | |
| Goldman Sachs Group Inc | 0.00% | 52,686 | $33,769,201 | $44,791,530 | +$11,022,329 | +32.64% | |
| Los Angeles Capital Management Llc | 0.13% | 52,024 | $33,344,784 | $44,228,724 | +$10,883,940 | +32.64% | |
| Davenport & Co Llc | 0.16% | 40,855 | $32,309,830 | $34,733,287 | +$2,423,457 | +7.50% | |
| Bank Of America Corp | 0.00% | 49,914 | $31,992,504 | $42,434,886 | +$10,442,382 | +32.64% | |
| Vanguard Fiduciary Trust Co | 0.01% | 48,505 | $31,089,280 | $41,237,011 | +$10,147,731 | +32.64% | |
| Allianz Asset Management Gmbh | 0.03% | 45,191 | $28,965,171 | $38,419,581 | +$9,454,410 | +32.64% | |
| Gotham Asset Management, Llc | 0.07% | 37,678 | $24,149,714 | $32,032,328 | +$7,882,614 | +32.64% | |
| Hb Wealth Management, Llc | 0.13% | 30,269 | $23,950,044 | $25,733,493 | +$1,783,449 | +7.45% | |
| Retirement Systems Of Alabama | 0.07% | 29,095 | $23,021,128 | $24,735,405 | +$1,714,277 | +7.45% | |
| Envestnet Asset Management Inc | 0.01% | 35,140 | $22,523,290 | $29,874,622 | +$7,351,332 | +32.64% | |
| Renaissance Technologies LLC | Jim Simons | 0.03% | 33,100 | $21,215,445 | $28,140,296 | +$6,924,851 | +32.64% |
| Jones Financial Companies Lllp | 0.01% | 33,468 | $20,995,755 | $28,453,155 | +$7,457,400 | +35.52% | |
| First Trust Advisors Lp | 0.01% | 30,292 | $19,415,657 | $25,753,047 | +$6,337,390 | +32.64% | |
| Citadel Advisors Llc | 0.01% | 27,525 | $17,642,149 | $23,400,654 | +$5,758,505 | +32.64% | |
| Sei Investments Co | 0.01% | 24,416 | $15,647,917 | $20,757,507 | +$5,109,590 | +32.65% | |
| Rhumbline Advisers | 0.01% | 24,202 | $15,512,219 | $20,575,572 | +$5,063,353 | +32.64% | |
| Wells Fargo & Company/Mn | 0.00% | 23,636 | $15,149,337 | $20,094,382 | +$4,945,045 | +32.64% | |
| Weiss Asset Management Lp | 0.25% | 21,001 | $13,460,591 | $17,854,210 | +$4,393,619 | +32.64% | |
| Ubs Am, A Distinct Business Unit Of Ubs Asset Management Americas Llc | 0.00% | 17,461 | $11,191,628 | $14,844,644 | +$3,653,016 | +32.64% | |
| Principal Financial Group Inc | 0.01% | 17,363 | $11,128,815 | $14,761,328 | +$3,632,513 | +32.64% | |
| Swiss National Bank | 0.01% | 15,740 | $10,088,553 | $13,381,518 | +$3,292,965 | +32.64% | |
| Gamco Investors, Inc. Et Al | 0.09% | 14,500 | $9,293,775 | $12,327,320 | +$3,033,545 | +32.64% | |
| Ameriprise Financial Inc | 0.00% | 14,267 | $9,145,625 | $12,129,233 | +$2,983,608 | +32.62% | |
| Allspring Global Investments Holdings, Llc | 0.01% | 12,685 | $8,096,963 | $10,784,280 | +$2,687,317 | +33.19% | |
| Voya Investment Management Llc | 0.01% | 12,543 | $8,039,436 | $10,663,557 | +$2,624,121 | +32.64% | |
| Mercer Global Advisors Inc | 0.01% | 12,164 | $7,796,516 | $10,341,346 | +$2,544,830 | +32.64% | |
| Nuveen, Llc | 0.00% | 11,943 | $7,654,866 | $10,153,461 | +$2,498,595 | +32.64% | |
| Franklin Resources Inc | 0.00% | 11,674 | $7,482,450 | $9,924,768 | +$2,442,318 | +32.64% | |
| Legal & General Group Plc | 0.00% | 11,379 | $7,293,369 | $9,673,971 | +$2,380,602 | +32.64% | |
| Illinois Municipal Retirement Fund | 0.09% | 11,084 | $7,104,290 | $9,423,173 | +$2,318,883 | +32.64% | |
| Alliancebernstein L.P. | 0.00% | 9,881 | $6,790,816 | $8,400,431 | +$1,609,615 | +23.70% |
Frequently asked questions about NEU
Who owns the most NEU stock?
The largest holders of NEU are typically major institutional investors such as asset managers and hedge funds reporting on Form 13F. The table above ranks tracked superinvestors by reported position size using the latest available filings for NEWMARKET CORP (NEU).
Is NEU widely held by superinvestors?
Many widely followed stocks like NEU appear across numerous superinvestor portfolios because of liquidity, index inclusion, and fundamentals. The holder count and table above show how broadly NEU is represented among the institutional managers we track.
What do “Current Estimated Value”, “Gain/loss Since Filing”, and “Estimated Portfolio Performance” mean?
Current Estimated Value is reported share quantity from the latest 13F times our most recent split-adjusted U.S. session close. Gain/loss Since Filing is that estimate minus the reported 13F dollar value; Estimated Portfolio Performance is that difference as a percent of the reported value. Green means the estimate is above the filing value; red means below (not purchase cost). If many filers share the same implied filing price per share, the performance % may match across rows. These are not official fund marks or live quotes.