Whale Analyzer
Top public holders · 13F and disclosure aggregation

Who owns IAC? 13F holders and whale ownership

IAC is tracked across public portfolios in Whale Analyzer. This page answers who owns IAC, which top funds are buying IAC, aggregate disclosed value, and recent position changes based on public data. Mason Hawkins is the largest reported holder at $161M; the top five funds control 100.0% of reported ownership; institutions were net buying last quarter (1 increased, 0 reduced); the stock trades below the aggregate whale cost basis of $75.91. Top tracked holders include Mason Hawkins.

Continue to the live IAC dashboard
NGM · latest quote
$42.24
-$0.22 (-0.5%)
Open live IAC dashboard
1Tracked holders
$161.0MAggregate reported value
2026-05-21Page updated
1 increasedRecent changes

Top holders

InvestorReported valueSharesChange
Mason Hawkins 13F portfolio
Southeastern Asset Management holdings
$161.0M4.0MIncreased

Ownership concentration

Reported ownership of IAC is highly concentrated across tracked institutions.

Whale activity this quarter

Across 1 tracked institutions, 1 increased. Net positioning is net buying.

Whale cost basis vs current price

The aggregate tracked cost basis is $75.91 versus a current price of $42.24, so IAC trades below its cost basis (-44.4%). Average unrealized P&L across tracked holders: -46%.

Sector positioning — Other

IAC sits within the Other sector alongside 670 other tracked names. Compare whale ownership across peers:

How to use this page

Values are reported public positions from tracked 13F filers and disclosures — not real-time ownership totals. Open the live IAC dashboard for price charts and cross-investor scans, or read the SEC 13F guide.

This page is generated from public filings and public disclosures. It is for research and education only and is not investment advice.

Related stock holder pages

Learn more in Whale Analyzer Academy

Deepen your read on IAC with these Whale Analyzer Academy guides:

Frequently asked questions

Who owns IAC stock?

Whale Analyzer tracks 1 public institutional holders of IAC with a combined reported value of $161.0M. See the holder table above for the largest tracked positions.

Which top funds are buying IAC?

Tracked institutions were net buying last quarter — 1 increased. Check the "Change" column: "New" = fresh position, "Increased" = added, "Reduced" = trimmed.

How concentrated is IAC ownership?

The top five tracked holders report 100.0% of aggregate ownership.

Is IAC above or below the whale cost basis?

The aggregate tracked cost basis is $75.91 versus a current price of $42.24 (-44.4%).

What does 13F ownership mean for IAC?

Use the interactive IAC dashboard on Whale Analyzer for real-time holder analysis, or read our 13F Alpha Signals Guide.