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Atom Investors’s Adtran ADTN Stock Holding History

Atom Investors’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
-439,946
Closed -$3.82M – 648
2025
Q4 		$3.82M Buy
439,946
+261,737
+147% +$2.27M 0.3% 112
2025
Q3 		$1.67M Buy
+178,209
New +$1.66M 0.13% 188
2023
Q2 		– Sell
-32,118
Closed -$509K – 286
2023
Q1 		$509K Buy
+32,118
New +$557K 0.28% 101
2022
Q4 		– Sell
-90,453
Closed -$1.77M – 218
2022
Q3 		$1.77M Sell
90,453
-118,193
-57% -$2.58M 0.62% 39
2022
Q2 		$3.66M Buy
+208,646
New +$3.78M 1.6% 7
2020
Q2 		– Sell
-16,883
Closed -$130K – 390
2020
Q1 		$130K Buy
16,883
+4,497
+36% +$38.4K 0.01% 276
2019
Q4 		$123K Buy
+12,386
New +$118K 0.01% 233

Other funds holding ADTN

BlackRock
BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return
VPM
Vanguard Portfolio Management Malvern, Pennsylvania $1.91T AUM
VCM
Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM
RA
Royce & Associates New York $10.1B AUM 42.88% 1-Year Est. Return
DnB Asset Management
DnB Asset Management Oslo, Norway $28B AUM 26% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $2.9T AUM 29.55% 1-Year Est. Return
William Blair Investment Management
William Blair Investment Management Chicago, Illinois $30.3B AUM 33.75% 1-Year Est. Return
Millennium Management
Millennium Management New York $240B AUM 35.51% 1-Year Est. Return
Morgan Stanley
Morgan Stanley New York $1.66T AUM 25.57% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.61T AUM 30.72% 1-Year Est. Return

Atom Investors's ADTN Position: Q1 2026 in Review

Atom Investors sold out of Adtran (ADTN) in Q1 2026, closing a stake of 439,946 shares — an estimated $3.82M sold.

Atom Investors first reported a position in ADTN in Q4 2019 and held it in 7 quarters. The position peaked at $3.82M in Q4 2025. 227 funds tracked by Wall St. Rank hold ADTN as of Q1 2026.

  • Atom Investors reported no remaining Adtran position as of Q1 2026 after selling out during the quarter.
  • Atom Investors sold 439,946 Adtran shares in Q1 2026, an estimated $3.82M.
  • Atom Investors first reported a position in Adtran in Q4 2019 and held it in 7 quarters.
  • Atom Investors's Adtran position peaked at $3.82M in Q4 2025.
  • 227 funds tracked by Wall St. Rank held Adtran as of Q1 2026.

Based on Atom Investors's 13F filing for Q1 2026, filed 15 May 2026.