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EXPO · Exponent Inc

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Market Cap
$3.34B
Shares
47.55M

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: 338
Total Value: $2,709,989,316
Total Shares: 46,119,660
Showing 1–100 of 339 holdings by value · page 1 of 4

Institutional Ownership Trend

26 quarters

Superinvestors Holding EXPO

All superinvestors →

Holder Concentration

Across 338 13F filers · Δ vs Mar 31, 2026
Top Holder
13.4%
Sep 2023 → Jun 2026 · range 12.4% – 13.4%
+0.6 pts
Top 5
37.8%
Sep 2023 → Jun 2026 · range 36.0% – 45.2%
+1.8 pts
Top 10
52.9%
Sep 2023 → Jun 2026 · range 52.0% – 60.1%
+0.9 pts
HHI
436
Sep 2023 → Jun 2026 · range 409 – 535
Broadly held+26

Quarterly Activity

vs Mar 31, 2026
New
39
Increased
114
Decreased
152
Sold Out
63
Unchanged
33
Holder count: -24
Institutional value: -12.1%
Shares held: -2.4%

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 339
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Holder Value (USD) % of 13F Shares Open
Key facts CIK 851520 CUSIP 30214U102 13F (30d) 242 filings 242 filers Visit website Investor relations