Stock Ownership/SPOK

SPOK HLDGS INC (SPOK): Ownership & Insider Activity

Hedge funds and institutional managers reporting a position in SPOK · Communication Services. Based on the most recent 13F filing from each holder, sourced from SEC EDGAR.

Reported Holders
13
13F filers
Aggregate Value
$20.2M
Across holders
Last Price
$10.62
2026-08-24
Sector
Communication Services
GICS
Quarterly fund activity8 increased3 reduced3 exited
Full exits: MARSHALL WACE, LLP, Squarepoint Ops LLC, Magnetar Financial LLC
Institutional Holders of SPOK
↗
13 holders
Manager⇅Type⇅Shares⇅Market Value▼% of Total⇅% of Portfolio⇅Action⇅QoQ Change⇅Quarter⇅
RENAISSANCE TECHNOLOGIES LLC
CIK 0001037389
Hedge Fund1.15M$11.8M58.3%0.0%Reduced$-1.2MQ2 2026
Qube Research & Technologies Ltd
CIK 0001729829
Hedge Fund288K$2.9M14.6%0.0%Added+$1.2MQ2 2026
CITADEL ADVISORS LLC
CIK 0001423053
Hedge Fund183K$1.9M9.3%0.0%Added+$1.7MQ2 2026
SHAW D E & CO INC
CIK 0001009207
Hedge Fund130K$1.3M6.6%0.0%Added+$26KQ2 2026
Man Group plc
CIK 0001637460
Hedge Fund58K$591K2.9%0.0%Added+$96KQ2 2026
AQR CAPITAL MANAGEMENT LLC
CIK 0001167557
Hedge Fund45K$461K2.3%0.0%Added+$388KQ2 2026
Schonfeld Strategic Advisors LLC
CIK 0001665241
Hedge Fund24K$250K1.2%0.0%Added—Q2 2026
TWO SIGMA INVESTMENTS, LP
CIK 0001179392
Hedge Fund23K$237K1.2%0.0%Added+$33KQ2 2026
MILLENNIUM MANAGEMENT LLC
CIK 0001273087
Hedge Fund22K$229K1.1%0.0%Reduced$-151KQ2 2026
Point72 Asset Management, L.P.
CIK 0001603466
Hedge Fund19K$196K1.0%0.0%Reduced$-722KQ2 2026
RENAISSANCE TECHNOLOGIES LLCReduced
Hedge Fund
$11.8M· 58.3% of total· 0.0% port· 1.15M sh· $-1.2M QoQ· Q2 2026
Qube Research & Technologies LtdAdded
Hedge Fund
$2.9M· 14.6% of total· 0.0% port· 288K sh· +$1.2M QoQ· Q2 2026
CITADEL ADVISORS LLCAdded
Hedge Fund
$1.9M· 9.3% of total· 0.0% port· 183K sh· +$1.7M QoQ· Q2 2026
SHAW D E & CO INCAdded
Hedge Fund
$1.3M· 6.6% of total· 0.0% port· 130K sh· +$26K QoQ· Q2 2026
Man Group plcAdded
Hedge Fund
$591K· 2.9% of total· 0.0% port· 58K sh· +$96K QoQ· Q2 2026
AQR CAPITAL MANAGEMENT LLCAdded
Hedge Fund
$461K· 2.3% of total· 0.0% port· 45K sh· +$388K QoQ· Q2 2026
Schonfeld Strategic Advisors LLCAdded
Hedge Fund
$250K· 1.2% of total· 0.0% port· 24K sh· — QoQ· Q2 2026
TWO SIGMA INVESTMENTS, LPAdded
Hedge Fund
$237K· 1.2% of total· 0.0% port· 23K sh· +$33K QoQ· Q2 2026
MILLENNIUM MANAGEMENT LLCReduced
Hedge Fund
$229K· 1.1% of total· 0.0% port· 22K sh· $-151K QoQ· Q2 2026
Point72 Asset Management, L.P.Reduced
Hedge Fund
$196K· 1.0% of total· 0.0% port· 19K sh· $-722K QoQ· Q2 2026
Brevan Howard Capital Management LPAdded
Hedge Fund
$143K· 0.7% of total· 0.0% port· 14K sh· — QoQ· Q2 2026
Grantham, Mayo, Van Otterloo & Co. LLCUnchanged
Institutional Manager
$107K· 0.5% of total· 0.0% port· 10K sh· +$0 QoQ· Q2 2026
Rockefeller Capital Management L.P.Unchanged
Hedge Fund
$28K· 0.1% of total· 0.0% port· 3K sh· $-17K QoQ· Q2 2026
1–10 of 13
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