Marshall Wace’s Spok Holdings SPOK Stock Holding History

Marshall Wace’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	$1.23M	Buy	+112,789	New	+$1.44M	﹤0.01%	2038
2025 Q4	–	Sell	-34,084	Closed	-$588K	–	3452
2025 Q3	$588K	Buy	34,084 +1,009	+3%	+$18K	﹤0.01%	2166
2025 Q2	$585K	Sell	33,075 -20,182	-38%	-$326K	﹤0.01%	2089
2025 Q1	$876K	Buy	+53,257	New	+$866K	﹤0.01%	1845
2023 Q2	–	Sell	-181,875	Closed	-$1.84M	–	2938
2023 Q1	$1.84M	Buy	181,875 +109,622	+152%	+$1M	﹤0.01%	1498
2022 Q4	$592K	Buy	+72,253	New	+$587K	﹤0.01%	2313
2022 Q3	–	Sell	-55,209	Closed	-$348K	–	3764
2022 Q2	$348K	Buy	55,209 +41,559	+304%	+$302K	﹤0.01%	2968
2022 Q1	$109K	Sell	13,650 -60,155	-82%	-$546K	﹤0.01%	3188
2021 Q4	$689K	Sell	73,805 -89,549	-55%	-$879K	﹤0.01%	2647
2021 Q3	$1.67M	Buy	163,354 +150,401	+1,161%	+$1.35M	0.01%	1679
2021 Q2	$125K	Buy	+12,953	New	+$138K	﹤0.01%	2519
2021 Q1	–	Sell	-22,184	Closed	-$247K	–	2828
2020 Q4	$247K	Buy	22,184 +5,976	+37%	+$59K	﹤0.01%	1702
2020 Q3	$154K	Buy	+16,208	New	+$162K	﹤0.01%	1486

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

Marshall Wace's SPOK Position: Q1 2026 in Review

Marshall Wace opened a new position in Spok Holdings (SPOK) in Q1 2026: 112,789 shares worth $1.23M. The stake represents ﹤0.01% of the portfolio and ranks #2038 among its holdings. This is a return to the name: Marshall Wace previously reported a position in SPOK as recently as Q3 2025.

Marshall Wace first reported a position in SPOK in Q3 2020 and has held it in 13 quarters since. The position peaked at $1.84M in Q1 2023. 139 funds tracked by Wall St. Rank hold SPOK as of Q1 2026.

Marshall Wace held 112,789 shares of Spok Holdings worth $1.23M as of Q1 2026.
Spok Holdings was a new Marshall Wace position in Q1 2026.
Spok Holdings made up ﹤0.01% of Marshall Wace's portfolio in Q1 2026, its #2038 holding.
Marshall Wace first reported a position in Spok Holdings in Q3 2020 and has held it in 13 quarters since.
Marshall Wace's Spok Holdings position peaked at $1.84M in Q1 2023.
139 funds tracked by Wall St. Rank held Spok Holdings as of Q1 2026.

Based on Marshall Wace's 13F filing for Q1 2026, filed 15 May 2026.