ADTRAN Holdings, Inc. (ADTN) Institutional Ownership & Insider Trading

249 institutions reported holding ADTRAN Holdings, Inc. shares in 13F filings for the quarter ended 2026-06-30, according to EquiReason's reading of their SEC filings. 9 insider trades on Form 4 since 2025-10-01.

Source: SEC EDGAR filings · figures as of 2026-06-30 · read by EquiReason

ADTNADTRAN Holdings, Inc.Follow ADTN — free

Communication Equipment · Technology

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Market cap: 523.9M
P/E TTM: —
Dividend yield: —
52-week: —
Next earnings: 2 Nov, in 9 days

Institutions · all 13F filers

quarter to 30 Jun 2026 · filers in both quarters

249 institutions held —% of the shares. Across filers that reported both quarters, shares held changed +8.4%.

Largest moves, shares (millions)

Institutional flow by quarter

net shares added or trimmed, millions · filers in both quarters

Quarter	Holders	Shares held, M	Change	Increased	New	Decreased	Closed
Jun 26	249	86	+8.4%	91	45	71	24
Mar 26	226	79	+12.1%	81	40	61	28
Dec 25	211	70	+3.9%	67	24	75	29
Sep 25	216	68	+15.1%	75	39	54	13
Jun 25	192	59	+1.1%	61	22	69	37
Mar 25	203	58	-5.0%	59	58	55	14
Dec 24	158	62	+3.4%	57	20	45	15
Sep 24	151	59	-5.8%	36	16	61	18

ADTRAN Holdings, Inc. — questions

Who owns ADTRAN Holdings, Inc. stock?: 249 institutions reported ADTRAN Holdings, Inc. shares in 13F filings for the quarter ended 2026-06-30. The largest: BlackRock, Inc. (9.6%), VANGUARD PORTFOLIO MANAGEMENT LLC (6.3%), VANGUARD CAPITAL MANAGEMENT LLC (4.3%).
Are ADTRAN Holdings, Inc. insiders buying or selling?: 9 insider trades on Form 4 since 2025-10-01; the full list, with dates, people and plan status, is on this page.

Every figure on this page comes from ADTRAN Holdings, Inc.'s own SEC filings — see them on SEC EDGAR. Price data is licensed and shown only inside the product.

How these figures are read: methodology · EquiReason.

Important information. Figures on this page are taken from filings submitted to the U.S. Securities and Exchange Commission (SEC) and processed automatically by EquiReason. They may contain errors, omissions or delays, and EquiReason makes no representation or warranty as to their accuracy, completeness or timeliness. Always verify figures against the original filing on SEC EDGAR before relying on them.

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