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CALX · Calix, Inc · Holdings

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Market Cap
$2.22B
Shares
62.96M

Institutional ownership from SEC Form 13F filings. Investment managers with more than $100 million in U.S. equities must disclose their positions every quarter, within 45 days of quarter-end, so the holdings shown can lag the market by up to a quarter.

Holders: 287
Total Value: $2,239,241,601
Total Shares: 60,001,184
Showing 1–100 of 292 holdings by value · page 1 of 3

Institutional Ownership Trend

26 quarters

Holder Concentration

Across 287 13F filers · Δ vs Mar 31, 2026
Top Holder
19.6%
Sep 2023 → Jun 2026 · range 15.2% – 20.6%
+1.0 pts
Top 5
43.5%
Sep 2023 → Jun 2026 · range 37.9% – 49.2%
+1.3 pts
Top 10
54.5%
Sep 2023 → Jun 2026 · range 51.0% – 61.5%
−0.7 pts
HHI
601
Sep 2023 → Jun 2026 · range 485 – 755
Broadly held+33

Quarterly Activity

vs Mar 31, 2026
New
38
Increased
106
Decreased
114
Sold Out
61
Unchanged
29
Holder count: -23
Institutional value: -23.5%
Shares held: +0.5%

Top Buyers

vs Mar 31, 2026
Institution Added Now Holds Open

Top Sellers

vs Mar 31, 2026
Institution Sold Now Holds Open

Top New Positions

vs Mar 31, 2026
Institution Acquired Value (USD) Open

Top Sold-Out Positions

vs Mar 31, 2026
Institution Previously Held Last Value (USD) Open
Showing 100 of 292
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Holder Value (USD) % of 13F Shares Open
Key facts CIK 1406666 CUSIP 13100M509 13F (30d) 137 filings 136 filers Visit website Investor relations