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MARSHALL WACE, LLP

Position in SPOK — Spok Holdings, Inc

CIK 1318757 LONDON, X0

Position in SPOK

as of Mar 31, 2026 · filed May 15, 2026
Position Value
$1,229,399
+$641,450 QoQ
Shares Held
112,789
+230.9% QoQ
Ownership
0.539%
of shares outstanding
% of Portfolio
0.00%
of 13F equity value
Holder Rank
not a current holder
Holding Since
Sep 2020
13 quarters on record
Voting authority Sole 0% Shared 100% None 0%

Common Shares in SPOK Over Time

Shares Held

Position Value (USD)

Position in Health Information Services

Healthcare · as of Jun 30, 2026

MARSHALL WACE, LLP holds $350,929,770 across 24 Health Information Services names.

# Ticker Company Shares Value (USD) Open

All Filings in SPOK

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13 filing rows on record
Report Date Value (USD) Shares
2026-03-31 $1,229,399 112,789
2025-09-30 $587,949 34,084
2025-06-30 $584,766 33,075
2025-03-31 $875,544 53,257
2023-03-31 $1,842,393 181,875
2022-12-31 $591,752 72,253
2022-06-30 $347,816 55,209
2022-03-31 $108,927 13,650
2021-12-31 $688,600 73,805
2021-09-30 $1,669,477 163,354
2021-06-30 $124,607 12,953
2020-12-31 $246,907 22,184
2020-09-30 $154,138 16,208