Exponent

EXPO · NASDAQ

$72.55+$0.30 (+0.42%)TodayMarket closed · Oct 20, 7:30 PM ET

Prev close $72.25

Who owns EXPO

Largest institutional holders, from their latest 13F filings

The 10 largest institutions hold 48.8% of EXPO’s shares.

BlackRock Institutional Trust Company, N.A.11.3%
Kayne Anderson Rudnick Investment Management, LLC8.2%
Vanguard Portfolio Management, LLC6.5%
Vanguard Capital Management, LLC4.5%
Next 6 largest institutions18.2%
All other shareholders51.2%

Top institutional holders of EXPO
Holder	Shares	% of shares	Change, last filing	Filed
BlackRock Institutional Trust Company, N.A.	5.50M	11.34%	+100.60K	Jun 30, 2026
Kayne Anderson Rudnick Investment Management, LLC	4.00M	8.24%	+109.38K	Jun 30, 2026
Vanguard Portfolio Management, LLC	3.14M	6.48%	+196.87K	Jun 30, 2026
Vanguard Capital Management, LLC	2.18M	4.49%	−30.44K	Jun 30, 2026
State Street Investment Management (US)	1.94M	4.01%	+54.11K	Jun 30, 2026
Geode Capital Management, L.L.C.	1.75M	3.60%	+100.42K	Jun 30, 2026
Geneva Capital Management LLC	1.41M	2.90%	−390.33K	Jun 30, 2026
Royce Investment Partners	1.32M	2.73%	+178.22K	Jun 30, 2026
Conestoga Capital Advisors, LLC	1.27M	2.61%	−640.80K	Jun 30, 2026
AQR Capital Management, LLC	1.14M	2.36%	+163.57K	Jun 30, 2026

Largest mutual fund holders

Top mutual fund holders of EXPO
Holder	Shares	% of shares	Change, last filing	Filed
iShares Core S&P Mid-Cap ETF	1.70M	3.50%	+31.93K	Aug 31, 2026
Vanguard Total Stock Market Index Fund	1.55M	3.19%	+6.79K	Jul 31, 2026
iShares Russell 2000 ETF	1.27M	2.61%	−5.52K	Jul 31, 2026
Vanguard Small-Cap Index Fund	1.11M	2.30%	+6.43K	Jul 31, 2026
First Trust SMID Cap Rising Dividend Achievers ETF	1.04M	2.15%	+11.79K	Aug 31, 2026

Insider trades

Form 4 filings by officers, directors and large holders

Over the last 6 months, insiders bought $12.59K (1 trade) and sold $1.18M (10 trades) of EXPO on the open market.

Latest EXPO insider transactions
Insider	Date	Type	Shares	Price	Value
Souri Shukri Jeries	Sep 18, 2026	Buy	184	$68.45	$12.59K
Corrigan Catherine	Aug 17, 2026	Option exercise	2.38K	—	—
Corrigan Catherine	Aug 17, 2026	Sale	1.71K	$66.28	$113.14K
Corrigan Catherine	Aug 17, 2026	Option exercise	2.38K	$29.05	$69.11K
Corrigan Catherine	Jul 28, 2026	Option exercise	12.66K	—	—
Corrigan Catherine	Jul 28, 2026	Option exercise	12.66K	$37.45	$474.30K
Corrigan Catherine	Jul 15, 2026	Option exercise	2.38K	—	—
Corrigan Catherine	Jul 15, 2026	Sale	1.74K	$62.78	$109.04K
Corrigan Catherine	Jul 15, 2026	Option exercise	2.38K	$29.05	$69.11K
Corrigan Catherine	Jun 15, 2026	Option exercise	2.38K	—	—

Short interest

Settled Sep 30, 2026

Shares short: 2.71M
Days to cover: 4.40
% of shares outstanding: 5.60%
Average daily volume: 617.17K
Change since last report: −11.9%

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