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US companies with the most insider buying

The companies whose own insiders bought most often over the last twelve months — with how many different people were buying, because one person buying twelve times and twelve people buying once are the same number and not the same signal.

ddbx started recording disclosures in March 2026, so periods described as a full year cover only the filings since then.

70 companies reached 3 or more qualifying purchases in the last twelve months; the 25 busiest are listed here.

#	Company	Purchases	Who bought	Combined value	Median alpha since
1	Amrize Ltd	18	8 different insiders	$3.1m	-10.3pp
2	BEXIL INVESTMENT TRUST	15	all by one insider	$1.3m	+1.5pp
3	Cardinal Infrastructure Group Inc.	13	7 different insiders	$8.5m	+1.4pp
4	TXO Partners, L.P.	12	all by one insider	$18m	+1.9pp
5	GLOBAL PARTNERS LP	12	all by one insider	$3.4m	+3.1pp
6	Alpha Metallurgical Resources, Inc.	10	all by one insider	$4.8m	-12.5pp
7	FIRST CITIZENS BANCSHARES INC	10	all by one insider	$1.1m	+6.1pp
8	Quantinuum Inc.	8	8 different insiders	$23m	+1.5pp
9	BOSTON SCIENTIFIC CORP	8	4 different insiders	$9.9m	-3.4pp
10	On Holding AG	8	3 different insiders	$11m	-17.2pp
11	Big Digital Energy, Inc.	8	all by one insider	$921k	-16.6pp
12	Angel Studios, Inc.	7	3 different insiders	$2.8m	+12.0pp
13	Liberty Latin America Ltd.	7	all by one insider	$118m	+22.4pp
14	EquipmentShare.com Inc	6	4 different insiders	$2.9m	-20.0pp
15	Burning Rock Biotech Ltd	6	all by one insider	$6.1m	-10.1pp
16	PROSPECT CAPITAL CORP	6	all by one insider	$6.1m	-4.3pp
17	Matador Resources Co	6	all by one insider	$1.4m	-0.8pp
18	MARKETWISE, INC.	6	all by one insider	$1.1m	+9.7pp
19	LEE ENTERPRISES, Inc	6	all by one insider	$532k	-9.1pp
20	BrasilAgro - Brazilian Agricultural Real Estate Co	6	all by one insider	$308k	-9.9pp
21	Goosehead Insurance, Inc.	5	5 different insiders	$692k	+68.2pp
22	SIMILARWEB LTD.	5	4 different insiders	$1.0m	+130.3pp
23	Rhinebeck Bancorp, Inc.	5	4 different insiders	$683k	-0.8pp
24	TREACE MEDICAL CONCEPTS, INC.	5	all by one insider	$704k	+66.1pp
25	Star Equity Holdings, Inc.	5	all by one insider	$359k	-13.3pp

How this is put together

• Companies are ranked by how many qualifying purchases were disclosed in the window, then by how many different insiders made them, then by total value. Two issuers with the same number of purchases are separated by how broad the buying was, not by how large.
• Only open-market purchases count, on the same test the rest of the site uses. Share allotments, vesting and placings are excluded, so an issuer that ran a big share award does not appear here for it.
• An issuer needs at least three qualifying purchases to be listed. Most companies in any window have exactly one, and a ranking that included them would be the company index in a different order.
• This ranks companies, not people. Where one insider made several of the purchases, the distinct-insider count says so — that is the difference between one person's conviction and a board acting together.
• Values are in the market's own currency and are never converted, so no exchange rate is involved.
• Being bought heavily is not the same as being a good investment, and this page is not ranked by performance. Where a median performance figure is shown it covers only the purchases old enough to have a mark.

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