Stock Ownership/CALX

CALIX INC (CALX): Ownership & Insider Activity

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

Reported Holders
19
13F filers
Aggregate Value
$227.3M
Across holders
Last Price
$39.80
2026-08-24
Sector
Information Technology
GICS
Quarterly fund activity17 increased2 reduced4 exited
Full exits: Point72 Asset Management, L.P., FRED ALGER MANAGEMENT, LLC, Gotham Asset Management, LLC, CAPSTONE INVESTMENT ADVISORS, LLC
Institutional Holders of CALX
↗
19 holders
Manager⇅Type⇅Shares⇅Market Value▼% of Total⇅% of Portfolio⇅Action⇅QoQ Change⇅Quarter⇅
CITADEL ADVISORS LLC
CIK 0001423053
Hedge Fund1.21M$45.1M19.8%0.0%Added+$44.7MQ2 2026
ARROWSTREET CAPITAL, LIMITED PARTNERSHIP
CIK 0001164508
Hedge Fund876K$32.7M14.4%0.0%Added+$12.1MQ2 2026
TWO SIGMA INVESTMENTS, LP
CIK 0001179392
Hedge Fund704K$26.3M11.6%0.0%Added+$20.2MQ2 2026
MILLENNIUM MANAGEMENT LLC
CIK 0001273087
Hedge Fund699K$26.1M11.5%0.0%Reduced$-45.0MQ2 2026
RENAISSANCE TECHNOLOGIES LLC
CIK 0001037389
Hedge Fund548K$20.5M9.0%0.0%Added+$175KQ2 2026
Rockefeller Capital Management L.P.
CIK 0001739439
Hedge Fund467K$17.4M7.7%0.0%Added+$14.6MQ2 2026
SHAW D E & CO INC
CIK 0001009207
Hedge Fund409K$15.3M6.7%0.0%Added+$14.8MQ2 2026
Man Group plc
CIK 0001637460
Hedge Fund318K$11.9M5.2%0.0%Added$-4.7MQ2 2026
Qube Research & Technologies Ltd
CIK 0001729829
Hedge Fund269K$10.1M4.4%0.0%Added+$2.2MQ2 2026
TUDOR INVESTMENT CORP ET AL
CIK 0000923093
Hedge Fund143K$5.3M2.3%0.0%Added+$2.9MQ2 2026
CITADEL ADVISORS LLCAdded
Hedge Fund
$45.1M· 19.8% of total· 0.0% port· 1.21M sh· +$44.7M QoQ· Q2 2026
ARROWSTREET CAPITAL, LIMITED PARTNERSHIPAdded
Hedge Fund
$32.7M· 14.4% of total· 0.0% port· 876K sh· +$12.1M QoQ· Q2 2026
TWO SIGMA INVESTMENTS, LPAdded
Hedge Fund
$26.3M· 11.6% of total· 0.0% port· 704K sh· +$20.2M QoQ· Q2 2026
MILLENNIUM MANAGEMENT LLCReduced
Hedge Fund
$26.1M· 11.5% of total· 0.0% port· 699K sh· $-45.0M QoQ· Q2 2026
RENAISSANCE TECHNOLOGIES LLCAdded
Hedge Fund
$20.5M· 9.0% of total· 0.0% port· 548K sh· +$175K QoQ· Q2 2026
Rockefeller Capital Management L.P.Added
Hedge Fund
$17.4M· 7.7% of total· 0.0% port· 467K sh· +$14.6M QoQ· Q2 2026
SHAW D E & CO INCAdded
Hedge Fund
$15.3M· 6.7% of total· 0.0% port· 409K sh· +$14.8M QoQ· Q2 2026
Man Group plcAdded
Hedge Fund
$11.9M· 5.2% of total· 0.0% port· 318K sh· $-4.7M QoQ· Q2 2026
Qube Research & Technologies LtdAdded
Hedge Fund
$10.1M· 4.4% of total· 0.0% port· 269K sh· +$2.2M QoQ· Q2 2026
TUDOR INVESTMENT CORP ET ALAdded
Hedge Fund
$5.3M· 2.3% of total· 0.0% port· 143K sh· +$2.9M QoQ· Q2 2026
AQR CAPITAL MANAGEMENT LLCAdded
Hedge Fund
$3.8M· 1.7% of total· 0.0% port· 106K sh· +$3.8M QoQ· Q2 2026
Squarepoint Ops LLCReduced
Hedge Fund
$3.6M· 1.6% of total· 0.0% port· 96K sh· $-13.5M QoQ· Q2 2026
Holocene Advisors, LPAdded
Hedge Fund
$3.4M· 1.5% of total· 0.0% port· 92K sh· +$3.0M QoQ· Q2 2026
Brevan Howard Capital Management LPAdded
Hedge Fund
$2.1M· 0.9% of total· 0.0% port· 55K sh· — QoQ· Q2 2026
Schonfeld Strategic Advisors LLCAdded
Hedge Fund
$1.2M· 0.5% of total· 0.0% port· 32K sh· +$648K QoQ· Q2 2026
CAXTON ASSOCIATES LLPAdded
Hedge Fund
$1.2M· 0.5% of total· 0.0% port· 32K sh· +$442K QoQ· Q2 2026
Magnetar Financial LLCAdded
Hedge Fund
$940K· 0.4% of total· 0.0% port· 25K sh· +$617K QoQ· Q2 2026
MARSHALL WACE, LLPAdded
Hedge Fund
$527K· 0.2% of total· 0.0% port· 14K sh· — QoQ· Q2 2026
Fulcrum Asset Management LLPAdded
Hedge Fund
$5K· 0.0% of total· 0.0% port· 144 sh· — QoQ· Q2 2026
1–10 of 19
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