ADTRAN (ADTN) Institutional Ownership

$7.90 +0.20 (+2.53%)

As of 03:35 PM Eastern

Current Institutional Ownership Percentage: 80.56%
Number of Institutional Buyers (last 12 months): 125
Total Institutional Inflows (last 12 months): $414.75M

Number of Institutional Sellers (last 12 months): 66
Total Institutional Outflows (last 12 months): $88.15M

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ADTN Institutional Buying and Selling by Quarter

ADTRAN Major Shareholders & Ownership History

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Reporting Date	Major Shareholder Name	Shares Held	Market Value	% of Portfolio	Quarterly Change in Shares	Ownership in Company
8/25/2026	VIRGINIA RETIREMENT SYSTEMS ET Al	28,100	$391K	0.0%	N/A	0.034%
8/24/2026	California State Teachers Retirement System	1,154,200	$16.04M	0.0%	+1,502.5%	1.417%
8/20/2026	Teza Capital Management LLC	27,209	$378K	0.7%	N/A	0.033%
8/20/2026	BTG Pactual Asset Management US LLC	16,818	$234K	0.0%	N/A	0.021%
8/20/2026	Kerrisdale Advisers LLC	70,519	$980K	0.2%	-87.2%	0.087%
8/20/2026	Headlands Technologies LLC	72,358	$1.01M	0.1%	+254.6%	0.089%
8/20/2026	Susquehanna Advisors Group Inc.	73,870	$1.03M	0.0%	-9.6%	0.091%
8/20/2026	GTS Securities LLC	11,647	$162K	0.0%	N/A	0.014%
8/20/2026	Hennessy Advisors Inc.	526,300	$7.32M	0.2%	N/A	0.646%
8/19/2026	UBS AM a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC	201,962	$2.81M	0.0%	+6.2%	0.248%
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8/19/2026	Hsbc Holdings PLC	33,230	$460K	0.0%	-65.9%	0.041%
8/18/2026	Empowered Funds LLC	184,606	$2.57M	0.0%	N/A	0.227%
8/17/2026	Corient Private Wealth LP	14,394	$200K	0.0%	N/A	0.018%
8/17/2026	Bank of America Corp DE	845,421	$11.75M	0.0%	N/A	1.038%
8/15/2026	Man Group plc	102,762	$1.43M	0.0%	N/A	0.126%
8/15/2026	Jupiter Topco LLC	32,900	$457K	0.0%	N/A	0.040%
8/14/2026	Hsbc Holdings PLC	33,230	$460K	0.0%	N/A	0.041%
8/14/2026	PDT Partners LLC	53,641	$746K	0.0%	N/A	0.066%
8/14/2026	Legal & General Group Plc	75,243	$1.05M	0.0%	N/A	0.092%
8/14/2026	The Manufacturers Life Insurance Company	20,468	$285K	0.0%	N/A	0.025%
8/14/2026	L2 Asset Management LLC	10,244	$142K	0.0%	N/A	0.013%
8/13/2026	Connor Clark & Lunn Investment Management Ltd.	629,119	$8.75M	0.0%	N/A	0.772%
8/13/2026	Globeflex Capital L P	132,526	$1.84M	0.2%	N/A	0.163%
8/12/2026	Quantbot Technologies LP	46,025	$640K	0.0%	N/A	0.056%
8/12/2026	William Blair Investment Management LLC	1,099,019	$15.28M	0.0%	N/A	1.349%
8/12/2026	Ieq Capital LLC	14,571	$203K	0.0%	N/A	0.018%
8/12/2026	Heartland Advisors Inc.	750,000	$10.43M	0.5%	N/A	0.920%
8/11/2026	NFJ Investment Group LLC	208,413	$2.90M	0.1%	N/A	0.256%
8/11/2026	Virtus Advisers LLC	33,159	$461K	0.2%	N/A	0.041%
8/11/2026	Lisanti Capital Growth LLC	115,625	$1.61M	0.4%	N/A	0.142%
8/10/2026	Tieton Capital Management LLC	570,542	$7.93M	2.3%	N/A	0.700%
8/7/2026	Focused Alpha LLC	14,657	$204K	0.1%	N/A	0.018%
8/7/2026	BlackRock Inc.	7,836,196	$108.92M	0.0%	N/A	9.617%
8/7/2026	Deutsche Bank AG	235,833	$3.28M	0.0%	N/A	0.289%
8/7/2026	Persistent Asset Partners Ltd	2,035	$28K	0.0%	N/A	0.002%
8/6/2026	Bank of New York Mellon Corp	255,026	$3.55M	0.0%	N/A	0.313%
8/6/2026	State of Wyoming	36,213	$503K	0.1%	N/A	0.044%
8/6/2026	GSA Capital Partners LLP	49,752	$692K	0.0%	N/A	0.061%
8/3/2026	Walleye Trading LLC	208,278	$2.90M	0.0%	N/A	0.256%
7/8/2026	Assenagon Asset Management S.A.	917,754	$12.76M	0.0%	+100.4%	1.133%
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5/19/2026	Bank of America Corp DE	367,226	$4.62M	0.0%	+12.4%	0.453%
5/18/2026	Royal Bank of Canada	457,402	$5.75M	0.0%	-14.6%	0.565%
5/16/2026	The Manufacturers Life Insurance Company	20,188	$254K	0.0%	-10.4%	0.025%
5/16/2026	Quantinno Capital Management LP	52,455	$660K	0.0%	+18.7%	0.065%
5/15/2026	Waverly Advisors LLC	29,879	$376K	0.0%	-5.6%	0.037%
5/15/2026	Granahan Investment Management LLC	30,782	$387K	0.0%	-43.9%	0.038%
5/15/2026	Entropy Technologies LP	15,793	$199K	0.0%	+53.6%	0.019%
5/14/2026	Renaissance Technologies LLC	202,899	$2.55M	0.0%	-19.4%	0.250%
5/14/2026	Paradigm Capital Management Inc. NY	733,200	$9.22M	0.4%	-35.1%	0.905%
5/14/2026	Arrowstreet Capital Limited Partnership	455,647	$5.73M	0.0%	+60.2%	0.563%
5/14/2026	Caxton Associates LLP	24,497	$308K	0.0%	N/A	0.030%
5/14/2026	Sei Investments Co.	1,105,110	$13.90M	0.0%	+162.0%	1.364%
5/14/2026	Group One Trading LLC	26,275	$331K	0.0%	+2,003.7%	0.032%
5/14/2026	Lido Advisors LLC	129,330	$1.63M	0.0%	+42.5%	0.160%
5/14/2026	Globeflex Capital L P	132,417	$1.67M	0.3%	+24.0%	0.163%
5/7/2026	Dimensional Fund Advisors LP	1,337,028	$16.82M	0.0%	+50.5%	1.657%
5/7/2026	Swiss National Bank	142,600	$1.79M	0.0%	+2.1%	0.177%
5/7/2026	Heartland Advisors Inc.	750,000	$9.44M	0.5%	N/A	0.929%
5/5/2026	Bank of New York Mellon Corp	240,001	$3.02M	0.0%	-3.6%	0.297%
5/5/2026	Hillsdale Investment Management Inc.	22,900	$288K	0.0%	-95.4%	0.028%
4/30/2026	Hsbc Holdings PLC	97,411	$1.23M	0.0%	+24.1%	0.121%
4/27/2026	Counterpoint Mutual Funds LLC	32,721	$412K	0.1%	N/A	0.041%
4/27/2026	Y Intercept Hong Kong Ltd	52,099	$655K	0.0%	+45.4%	0.065%
4/23/2026	Inspire Investing LLC	182,522	$2.30M	0.2%	+241.6%	0.226%
4/22/2026	1492 Capital Management LLC	625,024	$7.86M	3.0%	+6.8%	0.775%
4/20/2026	OP Asset Management Ltd	115,374	$1.45M	0.0%	N/A	0.143%
4/20/2026	Assenagon Asset Management S.A.	457,952	$5.76M	0.0%	-59.4%	0.567%
4/16/2026	SG Americas Securities LLC	1,316,049	$16.56M	0.0%	+53.6%	1.631%
4/16/2026	Thompson Davis & CO. Inc.	11,865	$149K	0.1%	N/A	0.015%
3/20/2026	Hsbc Holdings PLC	78,464	$686K	0.0%	+29.8%	0.097%
2/19/2026	Invesco Ltd.	246,809	$2.15M	0.0%	-5.3%	0.308%
2/18/2026	Mackenzie Financial Corp	361,607	$3.19M	0.0%	+33.9%	0.451%
2/18/2026	XTX Topco Ltd	66,690	$580K	0.0%	+11.8%	0.083%
2/18/2026	Voloridge Investment Management LLC	146,148	$1.27M	0.0%	+685.0%	0.182%
2/18/2026	Susquehanna Portfolio Strategies LLC	65,639	$570K	0.0%	-17.7%	0.082%
2/18/2026	Tudor Investment Corp ET AL	947,508	$8.23M	0.0%	+5.6%	1.183%
2/18/2026	Twinbeech Capital LP	11,100	$96K	0.0%	N/A	0.014%
2/18/2026	Polymer Capital Management US LLC	10,363	$90K	0.0%	-71.9%	0.013%
2/18/2026	Numerai GP LLC	74,520	$648K	0.1%	+428.9%	0.093%
2/18/2026	Ophir Asset Management Pty Ltd	1,069,420	$9.29M	1.0%	-11.2%	1.335%
2/18/2026	Millennium Management LLC	2,694,800	$23.42M	0.0%	+371.2%	3.363%
2/18/2026	Man Group plc	174,674	$1.52M	0.0%	-59.4%	0.218%
2/18/2026	Inspire Investing LLC	53,434	$464K	0.0%	+10.9%	0.067%
2/18/2026	Engineers Gate Manager LP	153,448	$1.33M	0.0%	+352.0%	0.192%
2/18/2026	Balyasny Asset Management L.P.	102,503	$891K	0.0%	-63.1%	0.128%
2/18/2026	Boothbay Fund Management LLC	101,822	$885K	0.0%	-7.1%	0.127%
2/17/2026	Freestone Grove Partners LP	10,022	$87K	0.0%	N/A	0.013%
2/17/2026	PDT Partners LLC	20,755	$180K	0.0%	N/A	0.026%
2/17/2026	AQR Capital Management LLC	236,912	$2.06M	0.0%	+34.3%	0.296%
2/17/2026	Lazard Asset Management LLC	45,238	$393K	0.0%	N/A	0.056%
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2/17/2026	Jain Global LLC	64,780	$563K	0.0%	+63.5%	0.081%
2/17/2026	Westerly Capital Management LLC	700,000	$6.08M	1.3%	-23.9%	0.874%
2/17/2026	Kovack Advisors Inc.	753,550	$6.55M	0.3%	+6.4%	0.941%
2/17/2026	Trexquant Investment LP	359,047	$3.12M	0.0%	-47.3%	0.448%
2/17/2026	Jump Financial LLC	78,555	$683K	0.0%	-59.2%	0.098%
2/17/2026	Price T Rowe Associates Inc. MD	108,727	$945K	0.0%	+3.1%	0.136%
2/17/2026	California State Teachers Retirement System	72,577	$631K	0.0%	+24.1%	0.091%
2/17/2026	Russell Investments Group Ltd.	28,868	$251K	0.0%	-47.5%	0.036%
2/17/2026	Atom Investors LP	439,946	$3.82M	0.3%	+146.9%	0.549%
2/17/2026	Granahan Investment Management LLC	54,840	$477K	0.0%	-90.6%	0.068%

ADTN Institutional Ownership - Frequently Asked Questions

During the previous two years, 222 institutional investors and hedge funds held shares of ADTRAN. The most heavily invested institutionals were BlackRock Inc. ($108.92M), Vanguard Group Inc. ($71.16M), Divisar Capital Management LLC ($30.14M), DNB Asset Management AS ($27.15M), Millennium Management LLC ($23.42M), Royce & Associates LP ($22.57M), and State Street Corp ($17.26M).Learn more on ADTRAN's institutional investors.

80.56% of ADTRAN's stock is owned by institutional investors. Learn more on ADTN's institutional investor holdings.

Of the 196 institutional investors that purchased ADTRAN's stock in the last 24 months, the following investors and hedge funds have bought the highest volume of shares: BlackRock Inc. ($7.84M), Millennium Management LLC ($2.49M), Assenagon Asset Management S.A. ($2.36M), Schonfeld Strategic Advisors LLC ($2.32M), Royce & Associates LP ($1.90M), Alyeska Investment Group L.P. ($1.53M), and Tudor Investment Corp ET AL ($1.51M).

Institutional investors have bought a total of 36,165,726 shares in the last 24 months. This purchase volume represents approximately $414.36M in transactions.

Of the 66 institutional investors that sold ADTRAN's stock in the last 24 months, the following investors and hedge funds have sold the highest volume of shares: Divisar Capital Management LLC ($1.02M), Assenagon Asset Management S.A. ($671.10K), Granahan Investment Management LLC ($551.71K), Alyeska Investment Group L.P. ($538.57K), Hillsdale Investment Management Inc. ($511.42K), Kerrisdale Advisers LLC ($481.49K), and William Blair Investment Management LLC ($423.91K).

Institutional investors have sold a total of 8,845,578 shares in the last 24 months. This volume of shares sold represents approximately $88.15M in transactions.

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Institutional ownership data for NASDAQ:ADTN is compiled from quarterly 13F filings submitted to the U.S. Securities and Exchange Commission (SEC), with the most recent received on 8/25/2026. New 13F filings are added each quarter as they're published.

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ADTRAN (ADTN) Institutional Ownership

ADTN Institutional Buying and Selling by Quarter

ADTRAN Major Shareholders & Ownership History

ADTN Institutional Ownership - Frequently Asked Questions

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ADTRAN (ADTN) Institutional Ownership

Institutional Ownership Changes (13F Filings) for ADTRAN (NASDAQ:ADTN)

ADTN Institutional Buying and Selling by Quarter

ADTRAN Major Shareholders & Ownership History

ADTN Institutional Ownership - Frequently Asked Questions

Who are the largest shareholders of ADTN shares?

What percentage of ADTRAN's stock is owned by institutional investors?

Which institutional investors have been buying ADTRAN's stock?

How much institutional buying is happening at ADTRAN?

Which of ADTRAN's major shareholders have been selling company stock?

How much institutional selling is happening at ADTRAN?

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