Citadel Advisors
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Citadel Advisors’s Spok Holdings SPOK Stock Holding History

Citadel Advisors’s Portfolio SPOK Stock Details SPOK Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q1 		– Sell
-12,200
Closed -$161K – 14161
2025
Q4 		$161K Buy
+12,200
New +$173K ﹤0.01% 11234
2025
Q2 		– Sell
-16,000
Closed -$263K – 14929
2025
Q1 		$263K Buy
16,000
+1,100
+7% +$17.9K ﹤0.01% 9872
2024
Q4 		$239K Buy
14,900
+2,800
+23% +$44.3K ﹤0.01% 10118
2024
Q3 		$182K Buy
12,100
+2,600
+27% +$39.5K ﹤0.01% 10297
2024
Q2 		$141K Sell
9,500
-3,100
-25% -$46.8K ﹤0.01% 10439
2024
Q1 		$201K Sell
12,600
-2,900
-19% -$47.7K ﹤0.01% 10307
2023
Q4 		$240K Buy
15,500
+3,700
+31% +$56.9K ﹤0.01% 9596
2023
Q3 		$168K Buy
11,800
+4,300
+57% +$57.7K ﹤0.01% 10180
2023
Q2 		$99.7K Buy
7,500
+1,800
+32% +$22.6K ﹤0.01% 10952
2023
Q1 		$57.7K Sell
5,700
-400
-7% -$3.65K ﹤0.01% 11977
2022
Q4 		$50K Sell
6,100
-30,100
-83% -$244K ﹤0.01% 12142
2022
Q3 		$277K Buy
+36,200
New +$251K ﹤0.01% 9747
2022
Q2 		– Sell
-15,000
Closed -$120K – 14041
2022
Q1 		$120K Buy
+15,000
New +$136K ﹤0.01% 12089

Other funds holding SPOK

BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
Renaissance Technologies
Renaissance Technologies New York $72.6B AUM 54.88% 1-Year Est. Return
Vanguard Capital Management
Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM
Dimensional Fund Advisors
Dimensional Fund Advisors Austin, Texas $552B AUM 44.19% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return
HighTower Advisors
HighTower Advisors Chicago, Illinois $104B AUM 28.3% 1-Year Est. Return
Qube Research & Technologies (QRT)
Qube Research & Technologies (QRT) London, United Kingdom $108B AUM 37.29% 1-Year Est. Return
Goldman Sachs
Goldman Sachs New York $1.15T AUM 47.82% 1-Year Est. Return
Vanguard Portfolio Management
Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM

Citadel Advisors's SPOK Position: Q2 2026 in Review

Citadel Advisors increased its Spok Holdings (SPOK) stake by 932% in Q2 2026, buying an estimated $1.8M and bringing the position to 183,447 shares worth $1.88M. The position accounts for ﹤0.01% of the portfolio, ranked #6699.

Citadel Advisors first reported a position in SPOK in Q2 2013 and has held it in 45 quarters since. The position peaked at $2.54M in Q1 2025. 133 funds tracked by Wall St. Rank hold SPOK as of Q2 2026.

  • Citadel Advisors held 183,447 shares of Spok Holdings worth $1.88M as of Q2 2026.
  • Citadel Advisors bought 165,672 Spok Holdings shares in Q2 2026, an estimated $1.8M.
  • Spok Holdings made up ﹤0.01% of Citadel Advisors's portfolio in Q2 2026, its #6699 holding.
  • Citadel Advisors first reported a position in Spok Holdings in Q2 2013 and has held it in 45 quarters since.
  • Citadel Advisors's Spok Holdings position peaked at $2.54M in Q1 2025.
  • 133 funds tracked by Wall St. Rank held Spok Holdings as of Q2 2026.

Based on Citadel Advisors's 13F filing for Q2 2026, filed 14 Aug 2026.