Exagen Inc. (XGN) Ownership

NASDAQ: XGNTop holders, insider trades and short interest.

XGN ownership summary

as of October 18, 2026
Institutions
44.9%
of shares outstanding
Insiders
24.33%
of shares outstanding
Shares outstanding
24.2M
Float
13.8M
shares available to trade
Short interest
3.21%
705K shares short
Days to cover
2.68
short interest down 12.0% vs prior month
  • Institutions 44.94%
  • Insiders 24.33%
  • Other investors 30.72%

XGN top institutional holders

20 largest
Exagen Inc. top institutional holders
#Holder% of sharesSharesValueChangeReported
1Wexford Capital LP3.27%793K$6.1M—June 30, 2026
2NANO CAP NEW MILLENNIUM GROWTH FUND L P2.79%675K$5.2M+90,000 (+15.4%)June 30, 2026
3Arnhold & S. Bleichroeder Advisers, LLC2.53%614K$4.7M+488,688 (+390.2%)June 30, 2026
4Vanguard Capital Management, LLC2.53%613K$4.7M−65,820 (−9.7%)June 30, 2026
5FourWorld Capital Management LLC2.46%597K$4.6M+156,578 (+35.6%)June 30, 2026
6Silvercrest Asset Management Group LLC2.12%515K$4.0M−23,109 (−4.3%)June 30, 2026
7Kennedy Capital Management Inc2.00%485K$3.7M−8,612 (−1.7%)June 30, 2026
8Mink Brook Asset Management LLC1.96%476K$3.7M+106,917 (+29.0%)June 30, 2026
9Jane Street Group LLC1.33%323K$2.5M+85,767 (+36.2%)June 30, 2026
10Acadian Asset Management LLC1.28%310K$2.4M−379,030 (−55.0%)June 30, 2026
11Marshall Wace Asset Management Ltd1.27%307K$2.4M+279,414 (+1,023.9%)June 30, 2026
12F.L.Putnam Investment Management1.19%289K$2.2M+288,810 (0.0%)June 30, 2026
13GSA Capital Partners LLP0.89%215K$1.7M−38,284 (−15.1%)June 30, 2026
14RTW INVESTMENTS, LLC0.80%195K$1.5M−200,231 (−50.7%)June 30, 2026
15Geode Capital Management, LLC0.77%186K$1.4M+6,797 (+3.8%)June 30, 2026
16Man Group PLC0.69%167K$1.3M+37,582 (+29.0%)June 30, 2026
17BlackRock Inc0.59%143K$1.1M+16,739 (+13.3%)June 30, 2026
18Perceptive Advisors LLC0.47%115K$886,974—June 30, 2026
19XTX Topco Ltd0.46%112K$864,239−130,337 (−53.8%)June 30, 2026
20SEI Investments Co0.45%109K$841,519−135,235 (−55.4%)June 30, 2026

Value at the latest close. Change = shares bought or sold in the latest quarterly filing (13F). In the top 20, 10 holders added 1.6M shares and 8 cut 981K.

XGN top mutual fund and ETF holders

18 largest
Exagen Inc. top fund holders
#Holder% of sharesSharesValueChangeReported
1First Eagle Small Cap Opportunity I1.87%452K$3.5M+12,442 (+2.8%)August 31, 2026
2Vanguard MStar Total Stk Mkt Idx Invest1.71%415K$3.2M—August 31, 2026
3Fidelity Extended Market Index0.27%66K$510,940−356 (−0.5%)August 31, 2026
4iShares Micro-Cap ETF0.18%44K$342,081−306 (−0.7%)September 30, 2026
5First Eagle US Small Cap Opp I-UC0.17%42K$321,739+1,900 (+4.8%)August 31, 2026
6Fidelity Total Market Index0.13%33K$252,004+6,835 (+26.5%)August 31, 2026
7Fidelity Series Total Market Index0.12%29K$220,784—August 31, 2026
8North Square Kennedy MicroCap I0.11%26K$198,095+208 (+0.8%)June 30, 2026
9EA Bridgeway Ultra-Small Company Mkt ETF0.10%24K$188,955—September 30, 2026
10BSF Systematic US Eq Abs Ret A2 USD0.10%24K$185,851—December 31, 2025
11Invesco NASDAQ Future Gen 200 ETF0.07%16K$126,160—September 30, 2026
12Perkins Discovery0.06%15K$115,800—March 31, 2026
13Vanguard MStar Inst Ttl StkMktIdxInstlPl0.04%11K$82,658—August 31, 2026
14Vanguard Balanced Index Inv0.03%7,858$60,664—August 31, 2026
15Fidelity Nasdaq Composite Index0.03%7,625$58,865−6,018 (−44.1%)August 31, 2026
16GMO US Small Cap Value VI0.02%5,678$43,834—May 31, 2026
17Vanguard U.S. Eq Idx £ Acc0.02%4,141$31,969—August 31, 2026
18Dimensional US Core Equity 2 ETF0.01%3,498$27,005—September 30, 2026

Funds report holdings monthly or quarterly; dates differ by fund.

XGN insider transactions

latest 3
Exagen Inc. insider transactions
DateNameTransactionPriceSharesValue
2026-03-03John AballiSell$3.6215,698$56,827
2026-02-24John AballiSell$3.6111,430$41,262
2025-10-16John AballiSell$11.8231,787$375,722

Reported trades by company officers, directors and other filers (including disclosures by members of Congress where EODHD lists them). "—" where the filing gives no share count.

XGN shares outstanding

Shares outstanding

Year-end shares outstanding, adjusted for splits.

Who owns XGN

Institutional investors own 44.9% of Exagen's shares and insiders 24.33%. The largest holder is Wexford Capital LP with 3.27% of the shares (793K), as of June 30, 2026. Among the top 20 institutions, 10 added shares and 8 reduced their stake in the latest filings. Short interest is 3.21% of the float, or 2.68 days of average trading volume. The share count rose 39,675.3% since 2013.

Related: XGN analyst forecast, XGN key metrics. See the XGN stock overview for the latest quote and news.

XGN ownership FAQ

Who owns the most Exagen stock?

The largest shareholders of Exagen are Wexford Capital LP (3.27%), NANO CAP NEW MILLENNIUM GROWTH FUND L P (2.79%), Arnhold & S. Bleichroeder Advisers, LLC (2.53%), Vanguard Capital Management, LLC (2.53%), FourWorld Capital Management LLC (2.46%).

What percentage of Exagen is owned by institutions?

Institutions hold 44.9% of Exagen's shares outstanding; insiders hold 24.33%.

Which funds own Exagen?

The largest fund holders of Exagen are First Eagle Small Cap Opportunity I (1.87%), Vanguard MStar Total Stk Mkt Idx Invest (1.71%), Fidelity Extended Market Index (0.27%), iShares Micro-Cap ETF (0.18%), First Eagle US Small Cap Opp I-UC (0.17%).

What is Exagen's short interest?

705K shares of Exagen were sold short, 3.21% of the float; at the average daily volume it would take 2.68 days to cover.

Are insiders buying or selling Exagen?

Of the latest 3 reported insider transactions in Exagen (since October 16, 2025), 0 were purchases and 3 were sales.

How many shares of Exagen are outstanding?

Exagen has 24.2M shares outstanding, of which 13.8M are in the public float.

Diagnostics & Research: ownership