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Atika Capital Management’s Calix CALX Stock Holding History

Atika Capital Management’s Portfolio CALX Stock Details CALX Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2025
Q4 		– Sell
-89,500
Closed -$5.49M – 83
2025
Q3 		$5.49M Buy
+89,500
New +$5.15M 0.44% 55
2024
Q1 		– Sell
-115,000
Closed -$5.02M – 101
2023
Q4 		$5.02M Buy
115,000
+43,000
+60% +$1.72M 0.67% 58
2023
Q3 		$3.3M Sell
72,000
-180,900
-72% -$8.19M 0.43% 62
2023
Q2 		$12.6M Sell
252,900
-155,600
-38% -$7.5M 1.26% 28
2023
Q1 		$21.9M Sell
408,500
-247,673
-38% -$13.5M 3.23% 9
2022
Q4 		$44.9M Sell
656,173
-143,927
-18% -$9.67M 6.46% 1
2022
Q3 		$48.9M Buy
800,100
+275,100
+52% +$14.7M 4.15% 1
2022
Q2 		$17.9M Buy
525,000
+27,000
+5% +$1M 2.01% 15
2022
Q1 		$21.4M Buy
498,000
+65,100
+15% +$3.29M 1.8% 25
2021
Q4 		$34.6M Buy
432,900
+132,340
+44% +$8.64M 2.43% 5
2021
Q3 		$14.9M Buy
+300,560
New +$13.9M 0.88% 39
2021
Q1 		– Sell
-19,447
Closed -$579K – 94
2020
Q4 		$579K Buy
+19,447
New +$480K 0.05% 107

Other funds holding CALX

BlackRock
BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return
Vanguard Group
Vanguard Group Malvern, Pennsylvania $6.9T AUM 27.45% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $2.9T AUM 29.55% 1-Year Est. Return
AllianceBernstein
AllianceBernstein Nashville, Tennessee $309B AUM 23.92% 1-Year Est. Return
CAM
Congress Asset Management Boston, Massachusetts $16.3B AUM 42.69% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.61T AUM 30.72% 1-Year Est. Return
Millennium Management
Millennium Management New York $240B AUM 35.51% 1-Year Est. Return
Arrowstreet Capital
Arrowstreet Capital Boston, Massachusetts $185B AUM 39.58% 1-Year Est. Return
Westfield Capital Management
Westfield Capital Management Boston, Massachusetts $23.8B AUM 49.45% 1-Year Est. Return
Fuller & Thaler Asset Management
Fuller & Thaler Asset Management San Mateo, California $29.7B AUM 43.33% 1-Year Est. Return

Atika Capital Management's CALX Position: Q4 2025 in Review

Atika Capital Management sold out of Calix (CALX) in Q4 2025, closing a stake of 89,500 shares — an estimated $5.49M sold.

Atika Capital Management first reported a position in CALX in Q4 2020 and held it in 12 quarters. The position peaked at $48.9M in Q3 2022. 331 funds tracked by Wall St. Rank hold CALX as of Q4 2025.

  • Atika Capital Management reported no remaining Calix position as of Q4 2025 after selling out during the quarter.
  • Atika Capital Management sold 89,500 Calix shares in Q4 2025, an estimated $5.49M.
  • Atika Capital Management first reported a position in Calix in Q4 2020 and held it in 12 quarters.
  • Atika Capital Management's Calix position peaked at $48.9M in Q3 2022.
  • 331 funds tracked by Wall St. Rank held Calix as of Q4 2025.

Based on Atika Capital Management's 13F filing for Q4 2025, filed 13 Feb 2026.