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
-18,600
Closed -$245K – 14162
2025
Q4 		$245K Buy
+18,600
New +$263K ﹤0.01% 10598
2025
Q2 		– Sell
-2,100
Closed -$34.5K – 14930
2025
Q1 		$34.5K Sell
2,100
-2,900
-58% -$47.2K ﹤0.01% 12681
2024
Q4 		$80.3K Sell
5,000
-700
-12% -$11.1K ﹤0.01% 11777
2024
Q3 		$85.8K Buy
5,700
+3,400
+148% +$51.7K ﹤0.01% 11322
2024
Q2 		$34.1K Sell
2,300
-14,100
-86% -$213K ﹤0.01% 12149
2024
Q1 		$262K Buy
16,400
+2,200
+15% +$36.2K ﹤0.01% 9765
2023
Q4 		$220K Sell
14,200
-9,400
-40% -$145K ﹤0.01% 9758
2023
Q3 		$337K Sell
23,600
-23,100
-49% -$310K ﹤0.01% 8926
2023
Q2 		$621K Buy
46,700
+25,500
+120% +$320K ﹤0.01% 7456
2023
Q1 		$215K Buy
21,200
+20,700
+4,140% +$189K ﹤0.01% 10062
2022
Q4 		$4.09K Sell
500
-13,300
-96% -$108K ﹤0.01% 14135
2022
Q3 		$105K Sell
13,800
-4,000
-22% -$27.8K ﹤0.01% 11044
2022
Q2 		$112K Sell
17,800
-10,200
-36% -$74.2K ﹤0.01% 11307
2022
Q1 		$223K Buy
28,000
+7,100
+34% +$64.5K ﹤0.01% 11268
2021
Q4 		$195K Sell
20,900
-32,900
-61% -$323K ﹤0.01% 11886
2021
Q3 		$550K Buy
53,800
+27,600
+105% +$248K ﹤0.01% 9630
2021
Q2 		$252K Buy
+26,200
New +$280K ﹤0.01% 11682

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.