Cubist Systematic Strategies’s Spok Holdings SPOK Stock Holding History

Cubist Systematic Strategies’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
2025 Q3	$586K	Sell	33,983 -4,981	-13%	-$88.6K	﹤0.01%	2198
2025 Q2	$689K	Buy	38,964 +2,360	+6%	+$38.1K	﹤0.01%	2119
2025 Q1	$602K	Buy	+36,604	New	+$595K	﹤0.01%	2083
2023 Q4	–	Sell	-23,147	Closed	-$330K	–	4078
2023 Q3	$330K	Buy	23,147 +2,680	+13%	+$36K	﹤0.01%	2547
2023 Q2	$272K	Sell	20,467 -98,782	-83%	-$1.24M	﹤0.01%	2677
2023 Q1	$1.21M	Buy	119,249 +84,202	+240%	+$769K	0.01%	2034
2022 Q4	$287K	Buy	+35,047	New	+$285K	﹤0.01%	3387
2021 Q3	–	Sell	-11,706	Closed	-$113K	–	3158
2021 Q2	$113K	Buy	+11,706	New	+$125K	﹤0.01%	2706
2020 Q1	–	Sell	-26,126	Closed	-$320K	–	2430
2019 Q4	$320K	Buy	+26,126	New	+$308K	0.01%	1813
2019 Q3	–	Sell	-15,174	Closed	-$228K	–	2459
2019 Q2	$228K	Sell	15,174 -1,550	-9%	-$23K	﹤0.01%	1981
2019 Q1	$228K	Buy	+16,724	New	+$232K	0.01%	1682

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

Vanguard Group Malvern, Pennsylvania $6.9T AUM 27.45% 1-Year Est. Return

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

Acadian Asset Management Boston, Massachusetts $70.5B AUM 36% 1-Year Est. Return

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

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

CSM Advisors Warrendale, Pennsylvania $4.07B AUM 29.62% 1-Year Est. Return

Cubist Systematic Strategies's SPOK Position: Q3 2025 in Review

Cubist Systematic Strategies reduced its Spok Holdings (SPOK) stake by 13% in Q3 2025, selling an estimated $88.6K and leaving 33,983 shares worth $586K. The position accounts for ﹤0.01% of the portfolio, ranked #2198.

Cubist Systematic Strategies first reported a position in SPOK in Q1 2019 and has held it in 11 quarters since. The position peaked at $1.21M in Q1 2023. 143 funds tracked by Wall St. Rank hold SPOK as of Q3 2025.

Cubist Systematic Strategies held 33,983 shares of Spok Holdings worth $586K as of Q3 2025.
Cubist Systematic Strategies sold 4,981 Spok Holdings shares in Q3 2025, an estimated $88.6K.
Spok Holdings made up ﹤0.01% of Cubist Systematic Strategies's portfolio in Q3 2025, its #2198 holding.
Cubist Systematic Strategies first reported a position in Spok Holdings in Q1 2019 and has held it in 11 quarters since.
Cubist Systematic Strategies's Spok Holdings position peaked at $1.21M in Q1 2023.
143 funds tracked by Wall St. Rank held Spok Holdings as of Q3 2025.

Based on Cubist Systematic Strategies's 13F filing for Q3 2025, filed 14 Nov 2025.