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 2021 vs. Q2 2021

How the institutions holding ADTRAN Holdings, Inc. changed between Q2 2021 and Q3 2021.

All holders in Q3 2021 All holders in Q2 2021

13F holders of ADTN: Q2 2021 compared with Q3 2021
Measure	Q2 2021	Of which not filed for Q3 2021	Q3 2021	Change
Holders	155	1	175	+21
Shares	44.7M	29.8K	44.6M	−88.9K (−0.2%)
Value	$923.9M	$617.0K	$836.8M	−$86.6M (−9.4%)

1 institution that held it in Q2 2021 haven't filed for Q3 2021 yet. Not filing isn't selling, so the changes leave them out.

New holders (36)

Institutions that held ADTRAN Holdings, Inc. at the end of Q3 2021 but not at the end of Q2 2021.

Institutions new to ADTN in Q3 2021
Institution	Shares	Value	% of portfolio
Westwood Holdings Group Inc.	1,937,598	$36.3M	0.39%
AIGH Capital Management LLC	812,656	$15.2M	4.52%
Segantii Capital Management Ltd	368,100	$6.91M	0.24%
Worth Venture Partners, LLC	188,738	$3.54M	1.60%
Polar Asset Management Partners Inc.	155,000	$2.91M	0.03%
HRT Financial LP	129,270	$2.42M	0.01%
Monarch Partners Asset Management LLC	91,224	$1.71M	0.25%
Bronson Point Management LLC	70,000	$1.31M	0.57%
TIG Advisors, LLC	52,289	$981.0K	0.05%
Franklin Resources Inc	30,456	$571.0K	0.00%
Dynamic Technology Lab Private Ltd	26,371	$495.0K	0.06%
Squarepoint Ops LLC	20,866	$391.0K	0.00%
We Are One Seven, LLC	20,289	$375.0K	0.05%
Gsa Capital Partners LLP	19,586	$367.0K	0.04%
Maryland State Retirement & Pension System	19,141	$358.0K	0.01%
SG Americas Securities, LLC	15,962	$299.0K	0.00%
Marshall Wace, LLP	15,199	$285.0K	0.00%
Harvest Investment Services, LLC	13,883	$260.0K	0.11%
Walleye Trading LLC	12,818	$240.0K	0.01%
CWM Advisors, LLC	12,012	$225.0K	0.03%
Engineers Gate Manager LP	11,225	$211.0K	0.01%
XTX Topco Ltd	10,902	$205.0K	0.07%
Jump Financial, LLC	10,223	$191.0K	0.01%
Keebeck Alpha, LP	10,080	$189.0K	0.06%
Group One Trading, L.P.	3,117	$58.0K	0.00%
Macquarie Group Ltd	2,372	$44.0K	0.00%
Point72 Hong Kong Ltd	1,637	$31.0K	0.00%
Whittier Trust Co of Nevada Inc	685	$13.0K	0.00%
Fieldpoint Private Securities, LLC	658	$12.0K	0.00%
First Horizon Advisors, Inc.	432	$8.00K	0.00%
Manchester Capital Management LLC	193	$4.00K	0.00%
First Manhattan Co	210	$3.00K	0.00%
Fifth Third Bancorp	103	$2.00K	0.00%
Parallel Advisors, LLC	33	$1.00K	0.00%
Private Capital Group, LLC	74	$1.00K	0.00%
Kowal Investment Group, LLC	1	$0	0.00%

Sold out (15)

Institutions that held ADTRAN Holdings, Inc. at the end of Q2 2021 and filed for Q3 2021 without it.

Institutions that sold out of ADTN in Q3 2021
Institution	Shares, Q2 2021	Value, Q2 2021
Cinctive Capital Management LP	160,000	$3.30M
Ardsley Advisory Partners LP	153,750	$3.17M
Schonfeld Strategic Advisors LLC	124,425	$2.57M
EAM Global Investors LLC	112,018	$2.31M
EAM Investors, LLC	79,604	$1.64M
Horrell Capital Management, Inc.	55,600	$1.15M
AQR Capital Management LLC	32,910	$680.0K
Susquehanna International Group, LLP	28,595	$590.0K
HSBC Holdings PLC	27,706	$569.0K
Shay Capital LLC	22,500	$465.0K
ProShare Advisors LLC	14,089	$291.0K
Lazard Asset Management LLC	12,000	$247.0K
Homrich & Berg	9,917	$205.0K
Altshuler Shaham Ltd	3,181	$66.0K
C M Bidwell & Associates Ltd	2,415	$50.0K

Not filed for Q3 2021 yet (1)

Institutions that held ADTRAN Holdings, Inc. at the end of Q2 2021 and haven't filed a 13F for Q3 2021. Not filing isn't selling, so they aren't counted as sold out.

Institutions holding ADTN in Q2 2021 that haven't filed for Q3 2021
Institution	Shares, Q2 2021	Value, Q2 2021
QS Investors, LLC	29,831	$617.0K