Newmarket Corp: which funds bought and sold

Institutions that bought and sold Newmarket shares in Q2 2026, from the holdings they reported to the SEC on Form 13F for March 31, 2026 and June 30, 2026.

Between March 31, 2026 and June 30, 2026, 212 institutions that filed 13F reports for both quarters added to or opened positions in Newmarket, and 183 cut or closed them. Together they added a net 135K shares, +2.3% on what they held at the start of the quarter. Active managers and hedge funds on our list were net buyers of 216K shares (+12.2%); index fund managers were net sellers of 49K shares (−2.2%). 84 opened a new position and 44 sold out entirely.

Bought, Q2 2026 212 institutions, 84 of them new holders Sold, Q2 2026 183 institutions, 44 of them sold out

Net change, all compared +135K shares (+2.3%)

Net change, active managers +216K shares (+12.2%), 16 bought, 31 sold

Buyers versus sellers

institutions compared, 460

212 bought 65 183 sold

Active managers and hedge funds 16 bought · 31 sold · +216K

Index fund managers 3 bought · 8 sold · −49K

Other institutions 193 bought · 144 sold · −32K

Biggest buyers

by change in shares held

Biggest buyers
Institution	Change in shares	Shares June 30, 2026	Value
AQR Capital Management LLC Hedge fund	+152K +128.2%	270K	$214M
Gotham Asset Management, LLC Hedge fund	+93K +247.3%	131K	$104M
Boston Partners Active manager	+73K +29.0%	324K	$256M
American Century Companies Inc Active manager	+41K +24.2%	209K	$166M
London Co Of Virginia Active manager	+27K +6.0%	488K	$387M
Federated Hermes, Inc. Active manager	+24K +3311.8%	24K	$19.2M
Goldman Sachs Group Inc	+21K +39.5%	74K	$58.2M
Jane Street Group, LLC	+19K New position	19K	$14.9M
Price T Rowe Associates Inc Active manager	+16K +22.3%	86K	$68M
Jones Financial Companies LLLP	+14K +42.2%	48K	$37.7M
First Trust Advisors LP	+14K +46.5%	44K	$35.1M
Natixis Advisors, LLC	+14K +38.6%	50K	$39.7M
Susquehanna Portfolio Strategies, LLC	+12K +1511.3%	13K	$10.4M
Dimensional Fund Advisors LP	+11K +5.7%	206K	$163M
Bank Of America Corp	+11K +21.9%	61K	$48.1M
Mackenzie Financial Corp	+11K New position	11K	$8.5M
Royal Bank Of Canada	+10K +137.6%	18K	$14M
Mariner, LLC	+7,965 +249.1%	11K	$8.8M
BNP Paribas Financial Markets	+6,949 +582.5%	8,142	$6.4M
Geode Capital Management, LLC Index funds	+6,212 +3.4%	191K	$151M

Biggest buyers, active managers and hedge funds
Institution	Change in shares	Shares June 30, 2026	Value
AQR Capital Management LLC Hedge fund	+152K +128.2%	270K	$214M
Gotham Asset Management, LLC Hedge fund	+93K +247.3%	131K	$104M
Boston Partners Active manager	+73K +29.0%	324K	$256M
American Century Companies Inc Active manager	+41K +24.2%	209K	$166M
London Co Of Virginia Active manager	+27K +6.0%	488K	$387M
Federated Hermes, Inc. Active manager	+24K +3311.8%	24K	$19.2M
Price T Rowe Associates Inc Active manager	+16K +22.3%	86K	$68M
Boothbay Fund Management, LLC Hedge fund	+4,456 New position	4,456	$3.5M
Edgestream Partners, L.P. Hedge fund	+3,822 New position	3,822	$3M
O'Shaughnessy Asset Management, LLC Active manager	+3,635 +53.8%	10K	$8.2M

Biggest sellers

by change in shares held

Biggest sellers
Institution	Change in shares	Shares June 30, 2026	Value
Millennium Management LLC Hedge fund	−54K −63.1%	32K	$25.1M
Caisse De Depot Et Placement Du Quebec	−42K −31.6%	92K	$72.5M
UBS Group AG	−40K −40.2%	59K	$46.8M
Vanguard Portfolio Management LLC Index funds	−34K −7.6%	416K	$329M
Pacer Advisors, Inc.	−33K −92.6%	2,627	$2.1M
Los Angeles Capital Management LLC Active manager	−30K −57.7%	22K	$17.4M
LSV Asset Management Active manager	−29K −10.7%	238K	$188M
Citadel Advisors LLC Hedge fund	−26K −95.6%	1,209	$956,609
Renaissance Technologies LLC Hedge fund	−23K −70.0%	9,932	$7.9M
Sei Investments Co	−14K −56.6%	11K	$8.4M
Allianz Asset Management Gmbh	−14K −30.6%	31K	$24.8M
Blackrock, Inc. Index funds	−14K −1.9%	703K	$556M
Schroder Investment Management Group Active manager	−9,068 Sold out	0	—
Exoduspoint Capital Management, LP Hedge fund	−8,335 Sold out	0	—
Bank Of Nova Scotia	−7,200 Sold out	0	—
Fora Capital, LLC	−6,219 Sold out	0	—
Robeco Institutional Asset Management B.V.	−5,688 Sold out	0	—
Vanguard Capital Management LLC Index funds	−5,457 −1.5%	349K	$276M
Victory Capital Management Inc Active manager	−5,395 −68.3%	2,502	$2M
Squarepoint Ops LLC Hedge fund	−5,223 −56.7%	3,983	$3.2M

Biggest sellers, active managers and hedge funds
Institution	Change in shares	Shares June 30, 2026	Value
Millennium Management LLC Hedge fund	−54K −63.1%	32K	$25.1M
Los Angeles Capital Management LLC Active manager	−30K −57.7%	22K	$17.4M
LSV Asset Management Active manager	−29K −10.7%	238K	$188M
Citadel Advisors LLC Hedge fund	−26K −95.6%	1,209	$956,609
Renaissance Technologies LLC Hedge fund	−23K −70.0%	9,932	$7.9M
Schroder Investment Management Group Active manager	−9,068 Sold out	0	—
Exoduspoint Capital Management, LP Hedge fund	−8,335 Sold out	0	—
Victory Capital Management Inc Active manager	−5,395 −68.3%	2,502	$2M
Squarepoint Ops LLC Hedge fund	−5,223 −56.7%	3,983	$3.2M
Lazard Asset Management LLC Active manager	−5,170 −80.6%	1,244	$984,303

New positions

largest by value

Institution	Shares	Value June 30, 2026
Jane Street Group, LLC	19K	$14.9M
Mackenzie Financial Corp	11K	$8.5M
Ieq Capital, LLC	5,730	$4.5M
Boothbay Fund Management, LLCHedge fund	4,456	$3.5M
Edgestream Partners, L.P.Hedge fund	3,822	$3M
Susquehanna Fundamental Investments, LLC	2,654	$2.1M
Natixis	2,291	$1.8M
Redwood Investment Management, LLC	1,497	$1.2M
Oak Thistle LLC	1,438	$1.1M
Jain Global LLCHedge fund	1,278	$1M

Sold out

largest by value

Institution	Shares	Value March 31, 2026
Schroder Investment Management GroupActive manager	9,068	$5.7M
Exoduspoint Capital Management, LPHedge fund	8,335	$5.3M
Bank Of Nova Scotia	7,200	$4.6M
Fora Capital, LLC	6,219	$4M
Robeco Institutional Asset Management B.V.	5,688	$3.6M
Marshall Wace, LLPHedge fund	4,760	$3.1M
Mubadala Investment Co Pjsc	4,387	$2.8M
HSBC Holdings PLC	3,761	$2.4M
Balyasny Asset Management L.P.Hedge fund	3,542	$2.3M
Perbak Capital Partners LLP	1,558	$998,600

Who holds the shares

13F holdings at June 30, 2026

Institutions reporting: 422
Ten largest holders: 57.2%
Index fund managers: 35.8%
Active managers and hedge funds: 33.1%

Buying and selling by type of institution, March 31, 2026 to June 30, 2026
Type	Bought	Sold	New	Sold out	Net change in shares	Net %
Active managers and hedge funds	16	31	4	9	+216K	+12.2%
Index fund managers	3	8	0	0	−49K	−2.2%
Other institutions	193	144	80	35	−32K	−1.8%

Active managers and hedge funds: a list we maintain of about 400 well-known stock-picking firms and hedge funds, matched by SEC registration number (CIK) and checked against the filer names each quarter. Index fund managers: the large index houses, such as BlackRock, Vanguard, State Street, Geode and Northern Trust. Every other filer (banks, brokers, wealth managers, pension funds, insurers and firms not on the list) counts as another institution. A firm that files under several SEC registrations appears once for each.

What these filings can and cannot tell you

Form 13F lists the long positions in US-listed shares held by investment managers with more than $100 million in such holdings. Managers file it up to 45 days after each quarter ends, so this page shows what funds held at the end of each quarter, not what they are doing now: a position may have changed since. Short positions, most derivatives and smaller managers are not included, and a cut can mean a fund lost clients or rebalanced rather than a view on Newmarket.

Only managers that filed a holdings report for both quarters are compared (460 here). 14 other holders are left out: first-time or late filers, firms that changed their SEC registration, and filings that withheld positions under confidential treatment, any of which would otherwise look like a new position or a sale. Figures are as reported by each manager in the SEC's quarterly 13F data sets; option positions are excluded.

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