Alyeska Investment Group
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Alyeska Investment Group’s Adtran ADTN Stock Holding History

Alyeska Investment Group’s Portfolio ADTN Stock Details ADTN Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q1 		– Sell
-545,464
Closed -$4.74M – 607
2025
Q4 		$4.74M Sell
545,464
-538,565
-50% -$4.67M 0.01% 466
2025
Q3 		$10.2M Buy
+1,084,029
New +$10.1M 0.03% 375
2025
Q2 		– Sell
-445,264
Closed -$3.88M – 547
2025
Q1 		$3.88M Buy
+445,264
New +$4.48M 0.02% 377
2024
Q3 		– Sell
-570,066
Closed -$3M – 515
2024
Q2 		$3M Buy
+570,066
New +$2.9M 0.02% 380
2020
Q3 		– Sell
-428,807
Closed -$4.69M – 452
2020
Q2 		$4.69M Buy
+428,807
New +$4.43M 0.07% 274
2016
Q4 		– Sell
-530,638
Closed -$10.2M – 465
2016
Q3 		$10.2M Buy
+530,638
New +$9.78M 0.09% 265
2016
Q1 		– Sell
-813,931
Closed -$14M – 380
2015
Q4 		$14M Sell
813,931
-538,553
-40% -$8.57M 0.15% 196
2015
Q3 		$19.7M Buy
1,352,484
+648,049
+92% +$10.2M 0.23% 157
2015
Q2 		$11.4M Sell
704,435
-122,673
-15% -$2.1M 0.13% 213
2015
Q1 		$15.4M Buy
827,108
+193,144
+30% +$4.11M 0.21% 177
2014
Q4 		$13.8M Buy
+633,964
New +$13M 0.24% 160

Other funds holding ADTN

BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
Vanguard Portfolio Management
Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM
Vanguard Capital Management
Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM
RA
Royce & Associates New York $12.4B AUM 64.17% 1-Year Est. Return
DnB Asset Management
DnB Asset Management Oslo, Norway $35.7B AUM 27.58% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return
William Blair Investment Management
William Blair Investment Management Chicago, Illinois $33.3B AUM 44.76% 1-Year Est. Return
Millennium Management
Millennium Management New York $276B AUM 44.8% 1-Year Est. Return
Morgan Stanley
Morgan Stanley New York $1.89T AUM 35.08% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return

Alyeska Investment Group's ADTN Position: Q1 2026 in Review

Alyeska Investment Group sold out of Adtran (ADTN) in Q1 2026, closing a stake of 545,464 shares — an estimated $4.74M sold.

Alyeska Investment Group first reported a position in ADTN in Q4 2014 and held it in 11 quarters. The position peaked at $19.7M in Q3 2015. 228 funds tracked by Wall St. Rank hold ADTN as of Q1 2026.

  • Alyeska Investment Group reported no remaining Adtran position as of Q1 2026 after selling out during the quarter.
  • Alyeska Investment Group sold 545,464 Adtran shares in Q1 2026, an estimated $4.74M.
  • Alyeska Investment Group first reported a position in Adtran in Q4 2014 and held it in 11 quarters.
  • Alyeska Investment Group's Adtran position peaked at $19.7M in Q3 2015.
  • 228 funds tracked by Wall St. Rank held Adtran as of Q1 2026.

Based on Alyeska Investment Group's 13F filing for Q1 2026, filed 15 May 2026.