ADTNADTRAN Holdings, Inc.

$7.46-21% 1Y

Who owns ADTN

248 institutions reported holding ADTN for 2026Q2, together 105% of the company, more than the 227 a quarter earlier.

248

Institutions reporting a position · as of 2026Q2 · up from 227 the quarter before

Shares held by institutions
84.0M

Shares held by institutions · 105% of the company · long US equity positions only, as reported on Form 13F

Reported value
$1.17B

Reported value · at Jun 30, 2026 prices, not today's

Top 5 holders
33%

Top 5 holders · of the whole company, between five filers

Details›
Reporting quarter2026-06-30
2026Q2
Quarters on record
53
New positions
52
Positions exited
31
Added to
87
Reduced
70
Top 10 holdersof the company
48%
Shares sold shortsettled Sep 15, 2026
12.5M
Short interestof shares outstanding
16%
Days to coverat the average daily volume
8.0
Change in the short positionsince the Aug 31, 2026 count
−2.9%
Institutional ownership by quarter, 2013Q2 to 2026Q2
QuarterFilersSharesReported value
2026Q224884.0M$1.17B
2026Q122778.7M$989M
2025Q421270.4M$612M
2025Q321867.5M$659M
2025Q219259.5M$534M
2025Q120458.7M$512M
2024Q415861.6M$513M
2024Q315259.1M$350M
2024Q215760.0M$316M
2024Q116963.7M$347M
2023Q416662.6M$460M
2023Q316163.1M$520M
2023Q216364.4M$675M
2023Q116962.6M$993M
2022Q417663.0M$1.18B
2022Q318460.8M$1.19B
Largest reported holders, 2026Q2
HolderShares% of companyValue
VANGUARD GROUP INC9.3M12%$129M
BlackRock Inc.7.8M9.8%$109M
STATE STREET CORP3.1M3.8%$43M
ROYCE & ASSOCIATES LP3.0M3.7%$41M
UBS Group AG2.9M3.7%$41M
TWO SIGMA INVESTMENTS, LP2.9M3.6%$40M
MILLENNIUM MANAGEMENT LLC2.7M3.4%$38M
JPMORGAN CHASE & CO2.6M3.3%$36M
DNB Asset Management AS2.6M3.3%$36M
GEODE CAPITAL MANAGEMENT LLC2.0M2.4%$27M
Short interest by settlement date, Aug 29, 2025 to Sep 15, 2026
SettlementShares shortOf shares outstandingDays to cover
Sep 15, 202612.5M16%8.0
Aug 31, 202612.9M16%7.7
Aug 14, 202611.8M15%4.6
Jul 31, 202610.6M13%4.2
Jul 15, 202612.7M16%9.2
Jun 30, 202612.6M16%5.4
Jun 15, 202612.0M15%4.5
May 29, 202611.5M14%4.0
May 15, 202611.5M14%3.8
Apr 30, 202611.1M14%4.1
Apr 15, 20269.5M12%3.9
Mar 31, 20268.2M10%3.8

SEC Form 13F data sets (DERA bulk files). 13F is quarterly, filed up to 45 days late, and covers long US equity positions only, no shorts, no derivatives, nothing held below the reporting threshold. The short position is FINRA's consolidated count for each twice-monthly settlement date, as a share of shares outstanding.

opening the register…
On our screens:Most shorted stocks