ADTRAN Holdings, Inc.

ADTN

Exchange: Nasdaq
Industry: Telephone & Telegraph Apparatus
SEC CIK: 0000926282

SEC filings (opens in a new tab)

In the last 90 days, ADTRAN Holdings, Inc. insiders filed 1 open-market purchase and 0 sales; 249 institutions reported holding it in 13F filings for Q2 2026, worth $1.17B in total; no superinvestor holds it.

Q3 2025 vs. Q2 2025

How the institutions holding ADTRAN Holdings, Inc. changed between Q2 2025 and Q3 2025.

All holders in Q3 2025 All holders in Q2 2025

13F holders of ADTN: Q2 2025 compared with Q3 2025
Measure	Q2 2025	Of which not filed for Q3 2025	Q3 2025	Change
Holders	194	1	221	+28
Shares	59.5M	198.1K	67.5M	+8.21M (+13.8%)
Value	$533.7M	$1.78M	$632.2M	+$100.3M (+18.8%)

1 institution that held it in Q2 2025 haven't filed for Q3 2025 yet. Not filing isn't selling, so the changes leave them out.

New holders (46)

Institutions that held ADTRAN Holdings, Inc. at the end of Q3 2025 but not at the end of Q2 2025.

Institutions new to ADTN in Q3 2025
Institution	Shares	Value	% of portfolio
Ophir Asset Management Pty Ltd	1,204,749	$11.3M	1.40%
Alyeska Investment Group, L.P.	1,084,029	$10.2M	0.03%
Jane Street Group, LLC	441,435	$4.14M	0.00%
D. E. Shaw & Co., Inc.	324,869	$3.05M	0.00%
Balyasny Asset Management LLC	277,953	$2.61M	0.01%
Wolverine Asset Management LLC	260,400	$2.44M	0.04%
Atom Investors LP	178,209	$1.67M	0.13%
Moore Capital Management, LP	174,330	$1.64M	0.03%
Hussman Strategic Advisors, Inc.	147,000	$1.38M	0.30%
Globeflex Capital L P	106,755	$1.00M	0.15%
ExodusPoint Capital Management, LP	100,431	$942.0K	0.01%
Summit Partners Public Asset Management, LLC	75,000	$703.5K	0.02%
Toroso Investments, LLC	63,655	$597.1K	0.00%
EntryPoint Capital, LLC	54,945	$515.4K	0.20%
Prudential Financial Inc	49,366	$463.1K	0.00%
Sender Co & Partners, Inc.	43,184	$405.1K	0.16%
Cetera Investment Advisers	40,599	$380.8K	0.00%
Jain Global LLC	39,632	$371.7K	0.00%
Canada Pension Plan Investment Board	31,700	$297.3K	0.00%
Virtus ETF Advisers LLC	31,571	$296.1K	0.16%
Weiss Asset Management LP	25,709	$241.2K	0.00%
Inceptionr LLC	25,383	$238.1K	0.06%
Bridgefront Capital, LLC	25,239	$236.7K	0.07%
PharVision Advisers, LLC	23,600	$221.4K	0.12%
Prelude Capital Management, LLC	19,400	$182.0K	0.01%
Omers Administration Corp	18,100	$169.8K	0.00%
Campbell & CO Investment Adviser LLC	18,049	$169.3K	0.01%
Virtu Financial LLC	17,518	$164.0K	0.01%
Panagora Asset Management Inc	15,356	$144.0K	0.00%
Entropy Technologies, LP	15,240	$143.0K	0.01%
Numerai GP LLC	14,089	$132.2K	0.02%
Stoneridge Investment Partners LLC	10,660	$100.0K	0.07%
Skaana Management L.P.	10,600	$99.4K	0.04%
Cerity Partners LLC	10,495	$98.4K	0.00%
FNY Investment Advisers, LLC	6,826	$64.0K	0.02%
Quarry LP	3,847	$36.1K	0.01%
State of Alaska, Department of Revenue	3,872	$36.0K	0.00%
Point72 Europe (London) LLP	1,607	$15.1K	0.00%
SRS Capital Advisors, Inc.	1,332	$12.5K	0.00%
Optiver Holding B.V.	662	$6.21K	0.00%
Johnson Financial Group, Inc.	296	$2.78K	0.00%
Rockefeller Capital Management L.P.	62	$582	0.00%
Ronald Blue Trust, Inc.	60	$563	0.00%
Allworth Financial LP	41	$385	0.00%
Farther Finance Advisors, LLC	17	$159	0.00%
Colony Group, LLC	109,183	–	–

Sold out (18)

Institutions that held ADTRAN Holdings, Inc. at the end of Q2 2025 and filed for Q3 2025 without it.

Institutions that sold out of ADTN in Q3 2025
Institution	Shares, Q2 2025	Value, Q2 2025
SG Capital Management LLC	847,417	$7.60M
Walleye Capital LLC	238,963	$2.14M
Lazard Asset Management LLC	176,300	$1.58M
Healthcare of Ontario Pension Plan Trust Fund	115,800	$1.04M
Jacobs Levy Equity Management, Inc	73,103	$655.7K
Gotham Asset Management, LLC	52,018	$466.6K
Nebula Research & Development LLC	35,307	$316.7K
Arrowstreet Capital, Limited Partnership	30,577	$274.3K
Magnetar Financial LLC	26,134	$234.4K
Kestra Advisory Services, LLC	12,707	$114.0K
Petrus Trust Company, LTA	11,855	$106.3K
Eqis Capital Management, Inc.	11,101	$99.6K
Park Avenue Securities LLC	10,130	$91.0K
Cape Investment Advisory, Inc.	3,000	$26.9K
BNP PARIBAS ASSET MANAGEMENT Holding S.A.	615	$6.00K
Twin Peaks Wealth Advisors, LLC	60	$546
Caitong International Asset Management Co., Ltd	46	$413
Larson Financial Group LLC	3	$27

Not filed for Q3 2025 yet (1)

Institutions that held ADTRAN Holdings, Inc. at the end of Q2 2025 and haven't filed a 13F for Q3 2025. Not filing isn't selling, so they aren't counted as sold out.

Institutions holding ADTN in Q2 2025 that haven't filed for Q3 2025
Institution	Shares, Q2 2025	Value, Q2 2025
Norges Bank	198,100	$1.78M