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 $5.72T AUM 30.48% 1-Year Est. Return
Renaissance Technologies
Renaissance Technologies New York $63.9B AUM 45.56% 1-Year Est. Return
VCM
Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM
Dimensional Fund Advisors
Dimensional Fund Advisors Austin, Texas $481B AUM 30.42% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.61T AUM 30.72% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $2.9T AUM 29.55% 1-Year Est. Return
HighTower Advisors
HighTower Advisors Chicago, Illinois $94.2B AUM 21.24% 1-Year Est. Return
VPM
Vanguard Portfolio Management Malvern, Pennsylvania $1.91T AUM
Goldman Sachs
Goldman Sachs New York $871B AUM 31.28% 1-Year Est. Return
Bank of New York Mellon
Bank of New York Mellon New York $544B AUM 28.31% 1-Year Est. Return

Citadel Advisors's SPOK Position: Q1 2026 in Review

Citadel Advisors reduced its Spok Holdings (SPOK) stake by 64% in Q1 2026, selling an estimated $406K and leaving 17,775 shares worth $194K. The position accounts for ﹤0.01% of the portfolio, ranked #11444.

Citadel Advisors first reported a position in SPOK in Q2 2013 and has held it in 44 quarters since. The position peaked at $2.54M in Q1 2025. 139 funds tracked by Wall St. Rank hold SPOK as of Q1 2026.

  • Citadel Advisors held 17,775 shares of Spok Holdings worth $194K as of Q1 2026.
  • Citadel Advisors sold 31,917 Spok Holdings shares in Q1 2026, an estimated $406K.
  • Spok Holdings made up ﹤0.01% of Citadel Advisors's portfolio in Q1 2026, its #11444 holding.
  • Citadel Advisors first reported a position in Spok Holdings in Q2 2013 and has held it in 44 quarters since.
  • Citadel Advisors's Spok Holdings position peaked at $2.54M in Q1 2025.
  • 139 funds tracked by Wall St. Rank held Spok Holdings as of Q1 2026.

Based on Citadel Advisors's 13F filing for Q1 2026, filed 15 May 2026.