InvestorLens

CALX — CALIX INC

Public company

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For educational research only.InvestorLens analyzes public regulatory filings (SEC EDGAR, STOCK Act PTRs) that may be delayed by 45 days or more. Information shown is historical and is not financial, legal, or tax advice, nor a recommendation or solicitation to buy or sell any security. Always do your own research.

InvestorLens aggregates public filing data to show which tracked investors reported holdings in this stock. Dollar values represent reported position values, not market capitalization, and may be delayed up to 45 days. Not a recommendation.

Sourced from SEC EDGAR public filings

Why are billionaires buying CALX?

Built from public SEC filings and public economic data. Not a recommendation.

Confidence
80
Institutional Conviction
Net accumulation · 4 buying vs 1 selling last quarter
66
Macro Tailwind
Macro conditions are mixed for this sector
52
Why? — Evidence & Confidence ▾

Of 5 tracked investors who changed their CALX position last quarter, 4 bought and 1 sold (80% buy-side). Macro conditions are mixed for this sector (Macro Tailwind 52/100 in a Squeeze regime).

Supporting evidence
  • +4 tracked investors added or increased positions last quarter (Paul Tudor Jones, Izzy Englander, Ken Griffin, …)
  • +5 tracked investors reported holding CALX at their latest filing
Contradicting evidence — always shown
  • −1 tracked investor reduced or exited last quarter (0 reduced, 1 sold out)
  • −13F data is disclosed up to 45 days after quarter end — positions may have changed since
Know the limits
  • · 13F disclosure lag (up to 45 days)
  • · Tracked investors are a sample, not the whole market
  • · Sector regime fit is a historical average, not a guarantee

Every InvestorLens score shows its evidence — including what argues against it. Model conviction-v1 · generated 8/4/2026.

About CALIX INC (CALX)

CALIX INC (CALX) appears in the most recent 13F filings of 5 tracked institutional investors. The largest disclosed position is held by Izzy Englander (Millennium Management), valued at $93M. Across recent filings, tracked investors recorded 8 new positions, 1 increased, 0 reduced, and 1 exited. All data sourced from SEC 13F filings.

Smart Money Consensus™

Based on recent institutional activity in CALX

90
/100
Strong Institutional Accumulation
Added / Increased9
Reduced0
Exited1
BearishBullish
Crowded Trade Score™

How many top investors track CALX

33
/100
Emerging Interest
5investors

A small number of top investors own this.

UndiscoveredCrowded
151015+

CALX Ownership Composition

How CALIX INC is held across tracked investor types, based on reported 13F positions.

Dominant Type
Other
83% of tracked value
Institutions
5
tracked investors
Total Reported
$147.8M
combined 13F value
Sectors2
  • Other83.0%
  • Hedge Funds17.0%
Other(4)
83.0%
Hedge Funds(1)
17.0%

Tracked investors reporting CALX

  • Izzy EnglanderMar 31, 2026
    Millennium Management
    Shares
    1.9M
    Value
    $93.3M
    % Portfolio
    0.04%
  • Steve CohenMar 31, 2026
    Point72 Asset Management
    Shares
    513.8K
    Value
    $25.2M
    % Portfolio
    0.03%
  • Ken GriffinMar 31, 2026
    Citadel Advisors
    Shares
    463.4K
    Value
    $22.7M
    % Portfolio
    0.00%
  • Paul Tudor JonesMar 31, 2026
    Tudor Investment Corp
    Shares
    64.8K
    Value
    $3.2M
    % Portfolio
    0.01%
  • Ray DalioDec 31, 2025
    Bridgewater Associates
    Shares
    65.5K
    Value
    $3.5M
    % Portfolio
    0.05%

Recent activity

Frequently asked questions

How many institutional investors hold CALX?
5 tracked institutional investors disclosed a position in CALX (CALIX INC) in their most recent 13F filing.
Who is the largest institutional holder of CALX?
Izzy Englander, Millennium Management, holds the largest disclosed position in CALX, valued at $93M.
Did institutional ownership of CALX increase or decrease?
Across recent 13F filings, tracked investors recorded 8 new positions, 1 increased, 0 reduced, and 1 fully exited CALX.
Where does this CALX ownership data come from?
SEC Form 13F-HR filings, accessed via EDGAR. 13F filings are disclosed quarterly with a 45-day reporting delay and cover U.S.-listed long equity positions only. This is not investment advice.