Delcath Systems, Inc. (DCTH) Ownership

NASDAQ: DCTHTop holders, insider trades and short interest.

DCTH ownership summary

as of October 18, 2026
Institutions
51.8%
of shares outstanding
Insiders
8.09%
of shares outstanding
Shares outstanding
34.7M
Float
28.8M
shares available to trade
Short interest
6.11%
1.9M shares short
Days to cover
5.49
short interest down 15.8% vs prior month
  • Institutions 51.79%
  • Insiders 8.09%
  • Other investors 40.12%

DCTH top institutional holders

1 largest
Delcath Systems, Inc. top institutional holders
#Holder% of sharesSharesValueChangeReported
1Fox Run Management LLC0.18%62K$868,426+61,678 (0.0%)June 30, 2026

Value at the latest close. Change = shares bought or sold in the latest quarterly filing (13F). In the top 1, 1 holders added 62K shares and 0 cut 0.

DCTH top mutual fund and ETF holders

20 largest
Delcath Systems, Inc. top fund holders
#Holder% of sharesSharesValueChangeReported
1Vanguard MStar Total Stk Mkt Idx Invest2.56%889K$12.5M—August 31, 2026
2iShares Russell 2000 ETF2.15%745K$10.5M−8,576 (−1.1%)September 30, 2026
3Fidelity Small Cap Index0.91%314K$4.4M+2,900 (+0.9%)July 31, 2026
4BlackRock Advantage Small Cap Core Instl0.69%239K$3.4M+85,831 (+56.0%)August 31, 2026
5North Square Dynamic Small Cap I0.65%227K$3.2M+73,950 (+48.3%)June 30, 2026
6Simplify Propel Opportunities ETF0.65%226K$3.2M—September 30, 2026
7iShares Russell 2000 Value ETF0.64%222K$3.1M+336 (+0.2%)September 30, 2026
8Vanguard Russell 2000 ETF0.48%165K$2.3M+3,850 (+2.4%)August 31, 2026
9GuideStone Funds Small Cap Equity Instl0.45%155K$2.2M+10,230 (+7.1%)September 30, 2026
10Fidelity Extended Market Index0.38%131K$1.8M+298 (+0.2%)August 31, 2026
11Stt Strt® SPDR® S&P®HlthCrEqpmntETF0.30%104K$1.5M−2,546 (−2.4%)September 30, 2026
12iShares Micro-Cap ETF0.26%91K$1.3M−625 (−0.7%)September 30, 2026
13BSF Systematic US Eq Abs Ret A2 USD0.26%90K$1.3M+16,135 (+21.9%)December 31, 2025
14DFA US Micro Cap I0.24%82K$1.2M+12,707 (+18.3%)August 31, 2026
15Fidelity® SAI Small-Mid Cap Momt Idx0.23%81K$1.1M+80,816 (0.0%)August 31, 2026
16BlackRock Advantage Small Cap Gr Instl0.23%79K$1.1M+2,539 (+3.3%)August 31, 2026
17Dimensional US Small Cap ETF0.23%79K$1.1M—September 30, 2026
18Schwab Small Cap Index0.20%70K$992,035—August 31, 2026
19CREF Total Global Stock Account R30.20%69K$968,901−34,940 (−33.7%)July 31, 2026
20Stt Strt SPDR® Russell2000 US SmCapETF0.16%56K$788,818+2,688 (+5.0%)August 31, 2026

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

DCTH insider transactions

latest 1
Delcath Systems, Inc. insider transactions
DateNameTransactionPriceSharesValue
2025-11-11Gerard J MichelBuy$8.5311,500$98,095

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.

DCTH shares outstanding

Shares outstanding

Year-end shares outstanding, adjusted for splits.

Who owns DCTH

Institutional investors own 51.8% of Delcath Systems's shares and insiders 8.09%. The largest holder is Fox Run Management LLC with 0.18% of the shares (62K), as of June 30, 2026. Among the top 1 institutions, 1 added shares and 0 reduced their stake in the latest filings. Short interest is 6.11% of the float, or 5.49 days of average trading volume. The share count rose 469.2% since 2013.

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

DCTH ownership FAQ

Who owns the most Delcath Systems stock?

The largest shareholders of Delcath Systems are Fox Run Management LLC (0.18%).

What percentage of Delcath Systems is owned by institutions?

Institutions hold 51.8% of Delcath Systems's shares outstanding; insiders hold 8.09%.

Which funds own Delcath Systems?

The largest fund holders of Delcath Systems are Vanguard MStar Total Stk Mkt Idx Invest (2.56%), iShares Russell 2000 ETF (2.15%), Fidelity Small Cap Index (0.91%), BlackRock Advantage Small Cap Core Instl (0.69%), North Square Dynamic Small Cap I (0.65%).

What is Delcath Systems's short interest?

1.9M shares of Delcath Systems were sold short, 6.11% of the float; at the average daily volume it would take 5.49 days to cover.

Are insiders buying or selling Delcath Systems?

Of the latest 1 reported insider transactions in Delcath Systems (since November 11, 2025), 1 were purchases and 0 were sales.

How many shares of Delcath Systems are outstanding?

Delcath Systems has 34.7M shares outstanding, of which 28.8M are in the public float.

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