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	$194K	Sell	17,775 -31,917	-64%	-$406K	﹤0.01%	11444
2025 Q4	$655K	Buy	49,692 +26,335	+113%	+$373K	﹤0.01%	8362
2025 Q3	$403K	Sell	23,357 -42,060	-64%	-$749K	﹤0.01%	9651
2025 Q2	$1.16M	Sell	65,417 -88,903	-58%	-$1.43M	﹤0.01%	6765
2025 Q1	$2.54M	Buy	154,320 +123,508	+401%	+$2.01M	﹤0.01%	5079
2024 Q4	$495K	Sell	30,812 -51,645	-63%	-$818K	﹤0.01%	8578
2024 Q3	$1.24M	Buy	+82,457	New	+$1.25M	﹤0.01%	6417
2024 Q2	–	Sell	-80,075	Closed	-$1.21M	–	15333
2024 Q1	$1.28M	Buy	80,075 +40,062	+100%	+$659K	﹤0.01%	6431
2023 Q4	$619K	Buy	40,013 +39,902	+35,948%	+$614K	﹤0.01%	7641
2023 Q3	$1.58K	Sell	111 -16,796	-99%	-$226K	﹤0.01%	13840
2023 Q2	$225K	Sell	16,907 -1,649	-9%	-$20.7K	﹤0.01%	9630
2023 Q1	$188K	Sell	18,556 -21,789	-54%	-$199K	﹤0.01%	10287
2022 Q4	$330K	Buy	40,345 +21,159	+110%	+$172K	﹤0.01%	9095
2022 Q3	$147K	Sell	19,186 -22,031	-53%	-$153K	﹤0.01%	10726
2022 Q2	$259K	Buy	41,217 +1,369	+3%	+$9.96K	﹤0.01%	10147
2022 Q1	$318K	Sell	39,848 -30,979	-44%	-$281K	﹤0.01%	10469
2021 Q4	$661K	Sell	70,827 -16,710	-19%	-$164K	﹤0.01%	8974
2021 Q3	$895K	Buy	87,537 +2,424	+3%	+$21.8K	﹤0.01%	8439
2021 Q2	$819K	Buy	85,113 +62,816	+282%	+$671K	﹤0.01%	8886
2021 Q1	$233K	Sell	22,297 -21,921	-50%	-$251K	﹤0.01%	11410
2020 Q4	$492K	Buy	44,218 +21,829	+97%	+$215K	﹤0.01%	8178
2020 Q3	$213K	Buy	+22,389	New	+$224K	﹤0.01%	8706
2019 Q4	–	Sell	-50,473	Closed	-$603K	–	9726
2019 Q3	$603K	Sell	50,473 -643	-1%	-$8.31K	﹤0.01%	6447
2019 Q2	$768K	Buy	51,116 +30,306	+146%	+$450K	﹤0.01%	6128
2019 Q1	$283K	Buy	20,810 +756	+4%	+$10.5K	﹤0.01%	7699
2018 Q4	$266K	Sell	20,054 -8,707	-30%	-$125K	﹤0.01%	7466
2018 Q3	$443K	Sell	28,761 -84,835	-75%	-$1.28M	﹤0.01%	6893
2018 Q2	$1.71M	Buy	113,596 +26,200	+30%	+$394K	﹤0.01%	4342
2018 Q1	$1.31M	Buy	87,396 +24,255	+38%	+$367K	﹤0.01%	4398
2017 Q4	$988K	Sell	63,141 -18,912	-23%	-$317K	﹤0.01%	4678
2017 Q3	$1.26M	Buy	82,053 +34,922	+74%	+$570K	﹤0.01%	3986
2017 Q2	$834K	Buy	47,131 +27,760	+143%	+$497K	﹤0.01%	4360
2017 Q1	$368K	Buy	+19,371	New	+$376K	﹤0.01%	5556
2016 Q3	–	Sell	-10,458	Closed	-$200K	–	7742
2016 Q2	$200K	Buy	+10,458	New	+$182K	﹤0.01%	5836
2016 Q1	–	Sell	-12,204	Closed	-$223K	–	7878
2015 Q4	$223K	Buy	+12,204	New	+$216K	﹤0.01%	5665
2015 Q3	–	Sell	-18,364	Closed	-$310K	–	9207
2015 Q2	$310K	Sell	18,364 -39,700	-68%	-$726K	﹤0.01%	5696
2015 Q1	$1.11M	Sell	58,064 -27,491	-32%	-$505K	﹤0.01%	3788
2014 Q4	$1.49M	Buy	85,555 +17,274	+25%	+$269K	﹤0.01%	3265
2014 Q3	$888K	Sell	68,281 -9,377	-12%	-$139K	﹤0.01%	3850
2014 Q2	$1.2M	Sell	77,658 -14,318	-16%	-$228K	﹤0.01%	3271
2014 Q1	$1.67M	Buy	91,976 +21,193	+30%	+$315K	﹤0.01%	2839
2013 Q4	$1.01M	Sell	70,783 -3,860	-5%	-$55.9K	﹤0.01%	3209
2013 Q3	$1.06M	Sell	74,643 -10,757	-13%	-$155K	﹤0.01%	3051
2013 Q2	$1.16M	Buy	+85,400	New	+$1.14M	﹤0.01%	3036

Other funds holding SPOK

BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return

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 Austin, Texas $481B AUM 30.42% 1-Year Est. Return

Geode Capital Management Boston, Massachusetts $1.61T AUM 30.72% 1-Year Est. Return

State Street Boston, Massachusetts $2.9T AUM 29.55% 1-Year Est. Return

HighTower Advisors Chicago, Illinois $94.2B AUM 21.24% 1-Year Est. Return

VPM

Vanguard Portfolio Management Malvern, Pennsylvania $1.91T AUM

Goldman Sachs New York $871B AUM 31.28% 1-Year Est. Return

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.