CALIX INC (CALX) is held by 158 institutional investors that disclose positions via SEC 13F filings. The largest disclosed holder is BlackRock, Inc. as of Q1 2026.

Are institutions buying or selling CALX?

In Q1 2026, 98 institutions opened or increased positions in CALIX INC while 77 reduced or exited — a net buying quarter.

What is the Smart Money Verdict on CALX?

The Smart Money Verdict combines four independent sources (institutional 13F activity, insider trades, activist filings, and congressional trades) into a single assessment for CALIX INC.

How many hedge funds hold CALX?

158 institutional investors report holding CALIX INC (CALX) as of Q1 2026, based on SEC 13F filings.

Is institutional money flowing into CALX?

As of Q1 2026, tracked institutions in CALIX INC show 98 buyers versus 77 sellers — net inflows.

Are Congress members and hedge funds both buying CALX?

Yes — in the latest quarter, 1 members of Congress and 98 institutional investors bought CALIX INC. HoldingsIntel cross-checks STOCK Act disclosures against 13F filings to surface these overlaps.

CALIX INC

CALX·13100M509·US·Common Stock·Technology - Software - Infrastructure-13D/G

158

Holders

(17 Elite)

$2.6B

Total Value

56% (175)

Consensus

98 buying - 77 selling

13F: Mar 31, 2026Insider & Congress: Updated regularly

Smart Money Verdict

View all

Held by 158 funds

17 elite

Who's Trading

ActivistVPVanguard Portfolio Management8.6%Apr 29, 2026

Activist

The Vanguard Group0.0%Mar 26, 2026

Activist

BlackRock, Inc.14.9%Jul 18, 2025

Congress

Donald J. TrumpBuy $1,001 - $15,000Apr 10, 2025

Congress

Donald J. TrumpBuy $1,001 - $15,000Apr 8, 2025

Congress

Donald J. TrumpBuy $15,001 - $50,000Mar 27, 2025

Congress

Donald J. TrumpSale $15,001 - $50,000Feb 24, 2025

Congress

Donald J. TrumpBuy $1,001 - $15,000Feb 13, 2025

Congress

Donald J. TrumpBuy $1,001 - $15,000Feb 4, 2025

Congress

Donald J. TrumpBuy $1,001 - $15,000Feb 3, 2025

View all activist filings View all congressional trades

Fund	Action	Shares	Value	Weight	Est. P&L	Conviction
BlackRock, Inc.	Decreased	11.2M(-2.7%)	$546.4M	0.0%	+12.26%	0
VPVANGUARD PORTFOLIO MANAGEMENT LLC	New	5.5M	$271.1M	0.0%	-23.18%	43
ALLIANCEBERNSTEIN L.P.	Increased	3.3M(+122.3%)	$172.1M	0.1%	-15.24%	49
VAVANGUARD CAPITAL MANAGEMENT LLC	New	2.7M	$131.6M	0.0%	-23.18%	42
STATE STREET CORP	Increased	2.6M(+10.1%)	$127.6M	0.0%	-6.55%	33
MILLENNIUM MANAGEMENT LLC	Increased	1.9M(+32.0%)	$93.3M	0.0%	-6.91%	38
CONGRESS ASSET MANAGEMENT CO	Increased	1.6M(+13.6%)	$80.6M	0.6%	+17.27%	48
WESTFIELD CAPITAL MANAGEMENT CO LP	Increased	1.5M(+35.0%)	$75.7M	0.3%	-26.16%	46
GEODE CAPITAL MANAGEMENT, LLC	Decreased	1.4M(-0.7%)	$70.3M	0.0%	+59.73%	0
DIMENSIONAL FUND ADVISORS LP	Increased	1.2M(+28.4%)	$59.7M	0.0%	-20.20%	37
LOOMIS SAYLES & CO L P	Increased	840,197(+6.4%)	$41.2M	0.1%	-25.53%	31
GGGILDER GAGNON HOWE & CO LLC	Decreased	779,092(-12.3%)	$38.2M	0.5%	+46.33%	0
BANK OF AMERICA CORP /DE/	Increased	750,117(+63.3%)	$36.7M	0.0%	-12.50%	42
MORGAN STANLEY	Increased	712,213(+14.3%)	$34.9M	0.0%	+2.64%	33
MAMIRAE ASSET GLOBAL ETFS HOLDINGS Ltd.	Decreased	696,855(-9.0%)	$34.1M	0.0%	+12.27%	0
CHARLES SCHWAB INVESTMENT MANAGEMENT INC	Increased	681,954(+1.3%)	$33.4M	0.0%	+62.91%	29
UBS Group AG	Increased	645,245(+79.7%)	$31.6M	0.0%	-6.22%	44
NORTHERN TRUST CORP	Increased	609,742(+2.4%)	$29.9M	0.0%	+61.99%	29
NANOMURA ASSET MANAGEMENT INTERNATIONAL INC.	Increased	556,995(+43.6%)	$27.3M	0.0%	-23.60%	39
ARROWSTREET CAPITAL, LIMITED PARTNERSHIP	Decreased	551,150(-56.9%)	$27M	0.0%	-26.48%	0