ADTRAN HOLDINGS INC

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ADTN·00486H105·US·Common Stock·Technology - Communication Equipment-13D/G

ADTN (ADTRAN HOLDINGS INC) is held by 135 institutional investors as of Q2 2026. Largest holders: BlackRock, Inc. ($108.9M), VANGUARD PORTFOLIO MANAGEMENT LLC ($71.4M), VANGUARD CAPITAL MANAGEMENT LLC ($48.8M). Net institutional sentiment: Mixed.

135

Holders

(8 Elite)

$1B

Total Value

60% (137)

Consensus

82 buying - 55 selling

13F: Jun 30, 2026Insider & Congress: Updated regularly

Smart Money Verdict

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Institutional (13F)59

Insider (Form 4)45

Activist (13D/13G)61

Congressional (STOCK Act)78

Holder Quality

76

★★★★★

Elite

50

★★★★

Strong

84

★★★

Solid

42

★★

Below

83

★

Weak

Held by 135 funds

8 elite

Who's Trading

Source dates: Price Aug 28, 2026 · Insiders Aug 7, 2026 · Activists Apr 28, 2026 · Congress none

InsiderSPSanto Timothy PBuy $50KAug 6, 2026

InsiderGCGlingener ChristophSell $334KMay 8, 2026

InsiderGCGlingener ChristophExercise 22K shMay 8, 2026

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Top Holders

Top Holders (135)History

AllNewIncreasedHeldDecreasedExited

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Fund	Action	Shares	Value	Weight	Est. P&L	Conviction
BlackRock, Inc.	Decreased	7.8M(-0.1%)	$108.9M	0.0%	-8.20%	0
VPVANGUARD PORTFOLIO MANAGEMENT LLC	Increased	5.1M(+7.6%)	$71.4M	0.0%	-24.05%	32
VAVANGUARD CAPITAL MANAGEMENT LLC	Increased	3.5M(+2.5%)	$48.8M	0.0%	-22.62%	30
STATE STREET CORP	Increased	3.1M(+31.1%)	$42.9M	0.0%	-17.09%	37
ROYCE & ASSOCIATES LP	Decreased	3M(-4.9%)	$41.3M	0.3%	-14.22%	0
UBS Group AG	Increased	2.9M(+1080.3%)	$40.9M	0.0%	-42.74%	47
TWO SIGMA INVESTMENTS, LP	Increased	2.9M(+157.8%)	$40.3M	0.0%	-37.09%	47
MILLENNIUM MANAGEMENT LLC	Increased	2.7M(+43.6%)	$37.8M	0.0%	-25.12%	39
DnB Asset Management AS	Decreased	2.6M(-16.1%)	$36.4M	0.1%	-38.62%	0
JPMORGAN CHASE & CO	Increased	2.6M(+72.7%)	$36.1M	0.0%	-32.41%	43
GEODE CAPITAL MANAGEMENT, LLC	Increased	2M(+7.6%)	$27.2M	0.0%	-51.02%	31
MORGAN STANLEY	Decreased	1.8M(-2.2%)	$24.9M	0.0%	+1.97%	0
RENAISSANCE TECHNOLOGIES LLC	Increased	1.8M(+774.2%)	$24.7M	0.0%	-43.20%	46
Boston Partners	Increased	1.7M(+39.8%)	$22.7M	0.0%	-29.97%	38
Qube Research & Technologies Ltd	Increased	1.4M(+418.2%)	$19.4M	0.0%	-40.70%	46
DIMENSIONAL FUND ADVISORS LP	Increased	1.4M(+2.2%)	$19M	0.0%	-11.05%	29
First Eagle Investment Management, LLC	Decreased	1.2M(-8.8%)	$17.4M	0.0%	-5.98%	0
WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC	Decreased	1.1M(-44.8%)	$15.3M	0.0%	-5.68%	0
DED. E. Shaw & Co., Inc.	Decreased	1.1M(-10.4%)	$15.2M	0.0%	-13.92%	0
GOLDMAN SACHS GROUP INC	Increased	1M(+7.7%)	$14.5M	0.0%	-19.05%	30

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High Conviction Moves-Smart Money Convergence-Fund Consensus-Double-Down Detection

Data sourced from four public-disclosure sources: SEC 13F, Form 4, 13D/13G, and House/Senate STOCK Act disclosures. Not financial advice. Full disclaimer