Vault-13

DELCATH SYS INC DCTH

COM NEW · Common Stock · CUSIP 24661P807 · ISIN US24661P8077

53 institutional holders +16 vs Q1 2024
10,489,88310.5m shares reported held*
37.5% of all shares outstanding*
$80.9mreported value*
19 new 17 added 10 reduced 3 sold out net bought ≈ $8.9m (+1.9m shares)

* Summed across managers. Shares that two managers' reports both contain – a subsidiary's holdings that its parent's report includes too, or a sub-adviser's in its client's – are counted once. Holder counts are more reliable. Shares outstanding: 28.0m as of 2024-07-29, from the company's own SEC filing; the percentage can still exceed 100%: lent-out shares are counted by the lender and the buyer, and some reports overlap without saying so. Implied quarter-end price ≈ $7.71. Options: 6 managers hold calls ($1.6m notional), 6 hold puts ($839.4k).

Trends to Q2 2024

Institutional holders

Managers reporting a position, each quarter

0204060Q3 22: 24Q4 22: 23Q1 23: 25Q2 23: 32Q3 23: 39Q4 23: 43Q1 24: 37Q2 24: 5353Q3 22Q1 23Q3 23Q1 24Q2 24
Numbers
QuarterHolders
Q3 202224
Q4 202223
Q1 202325
Q2 202332
Q3 202339
Q4 202343
Q1 202437
Q2 202453

Buyers vs sellers

Managers adding to or starting a position, vs cutting or selling out

Bought or addedCut or sold out
40040Q4 22: 7 bought or addedQ4 22: 8 cut or sold outQ4 22Q1 23: 12 bought or addedQ1 23: 5 cut or sold outQ2 23: 18 bought or addedQ2 23: 4 cut or sold outQ2 23Q3 23: 23 bought or addedQ3 23: 12 cut or sold outQ4 23: 28 bought or addedQ4 23: 12 cut or sold outQ4 23Q1 24: 15 bought or addedQ1 24: 19 cut or sold outQ2 24: 36 bought or addedQ2 24: 13 cut or sold outQ2 24
Numbers
QuarterBought or addedCut or sold out
Q4 202278
Q1 2023125
Q2 2023184
Q3 20232312
Q4 20232812
Q1 20241519
Q2 20243613

Calls vs puts

Options held, notional value, last 4 quarters. P/C = puts ÷ calls

CallsPuts
$0$500k$1m$1.5m$2mQ3 23 calls: $686.3kQ3 23 puts: $236.3kQ3 23P/C 0.34Q4 23 calls: $747.8kQ4 23 puts: $252.5kQ4 23P/C 0.34Q1 24 calls: $1.2mQ1 24 puts: $332.0kQ1 24P/C 0.28Q2 24 calls: $1.6mQ2 24 puts: $839.4kQ2 24P/C 0.54
Numbers
QuarterCallsPutsP/C
Q3 2023$686.3k$236.3k0.34
Q4 2023$747.8k$252.5k0.34
Q1 2024$1.2m$332.0k0.28
Q2 2024$1.6m$839.4k0.54

Biggest buyers

Rosalind Advisors, Inc. Added +1,611,561+1.6m
ESSEX INVESTMENT MANAGEMENT CO LLC New +335,903+335.9k
VANGUARD GROUP INC Added +312,690+312.7k
LASRY MARC New +161,827+161.8k
Shellback Capital, LP New +161,688+161.7k
Legato Capital Management LLC New +115,463+115.5k
CITADEL ADVISORS LLC Added +110,013+110.0k
Ikarian Capital, LLC New +100,370+100.4k
Informed Momentum Co LLC New +87,208+87.2k
RENAISSANCE TECHNOLOGIES LLC New +82,900+82.9k

Biggest sellers

BVF INC/IL Sold out -1,202,067-1.2m
MORGAN STANLEY Reduced -181,249-181.2k
LEVIN CAPITAL STRATEGIES, L.P. Reduced -39,969-40.0k
Hunting Hill Global Capital, LLC Reduced -35,996-36.0k
CIBC WORLD MARKET INC. Reduced -31,206-31.2k
JANE STREET GROUP, LLC Sold out -23,430-23.4k
ADAR1 Capital Management, LLC Reduced -20,626-20.6k
MILLENNIUM MANAGEMENT LLC Reduced -7,850-7.8k
Tower Research Capital LLC (TRC) Reduced -6,725-6.7k
ROYAL BANK OF CANADA Reduced -3,313-3.3k

Biggest calls

SUSQUEHANNA INTERNATIONAL GROUP, LLP Reduced $847.9k101.3k shares
GROUP ONE TRADING LLC Added $341.5k40.8k shares
SIMPLEX TRADING, LLC Reduced $231.0k27.6k shares
CITADEL ADVISORS LLC Added $97.9k11.7k shares
Hunting Hill Global Capital, LLC New $44.4k5.3k shares
CONCOURSE FINANCIAL GROUP SECURITIES, INC. Unchanged $00 shares

Biggest puts

CITADEL ADVISORS LLC Added $292.1k34.9k shares
GROUP ONE TRADING LLC Added $229.3k27.4k shares
WOLVERINE TRADING, LLC New $159.0k19.0k shares
SUSQUEHANNA INTERNATIONAL GROUP, LLP Reduced $133.9k16.0k shares
SIMPLEX TRADING, LLC Reduced $25.0k3.1k shares
CONCOURSE FINANCIAL GROUP SECURITIES, INC. Unchanged $00 shares

Options at notional value: the value of the shares the contracts control, as filers report them, not what the options cost. Not included in the holders, shares or buying above.

Major shareholders (over 5%)

Anyone who owns more than 5% of a class of the company's shares has to say so: on Schedule 13D if they may try to influence or control the company, on 13G if they're a passive investor, and update it as the stake changes. Each holder's latest filing, from 19 Dec 2024 on; percentages are of the share class, as the holder worked them out.

HolderStakeChangeShares Last filed
Rosalind Advisors, Inc. 13D · may seek influence no change · filed 2026-10-19
Stated purposeItem 4 is hereby amended and supplemented as follows: On May 6, 2020, pursuant to the terms of the Board Appointment Agreement, the Board of Directors of the Issuer (the Board) increased the number of directors constituting the Board to eight members and elected Steven Salamon and Gilad Aharon as independent directors of the Issuer to fill the vacancies created by the increase in the number of directors. Mr. Salamon was elected to serve as a Class III director with a term scheduled to expire at the 2024 Annual Meeting of Stockholders and Dr. Aharon was elected to serve as a Class I director with a term scheduled to expire at the 2025 Annual Meeting of Stockholders. Full filing
9.9% no change 6.7m≈ $47.6m 2026-10-19
BlackRock Portfolio Management LLC 13G · institution new · filed 2026-10-27 6.3% new 2.2m≈ $27.5m 2026-10-27
BlackRock, Inc. 13G · institution +0.3 pts · filed 2026-07-28 5.3% +0.3 pts 1.8m≈ $23.1m 2026-07-28
Kaufman Daniel Louis 13G · passive investor new · filed 2026-03-20 5.1% new 1.8m≈ $22.2m 2026-03-20

Insider purchases and sales in Q2 2024

Shares bought or sold by the company's own officers, directors and 10% owners, in the open market or privately, as they reported to the SEC on Form 4 (due within two business days of the trade). Grants, option exercises, shares withheld for tax and gifts aren't included.

Officers and directors buying vs selling

Number of people, by quarter (10% owners not included)

BuyingSelling
10010Q3 22: 1 buyingQ3 22: 0 sellingQ4 22: 3 buyingQ4 22: 0 sellingQ4 22Q1 23: 1 buyingQ1 23: 0 sellingQ2 23: 0 buyingQ2 23: 0 sellingQ2 23Q3 23: 1 buyingQ3 23: 0 sellingQ4 23: 6 buyingQ4 23: 0 sellingQ4 23Q1 24: 2 buyingQ1 24: 0 sellingQ2 24: 0 buyingQ2 24: 0 sellingQ2 24
Numbers
QuarterBuyingBoughtSellingSoldSold under a plan
Q3 20221$250.0k0——
Q4 20223$205.1k0——
Q1 20231$95.1k0——
Q2 20230—0——
Q3 20231$50.6k0——
Q4 20236$830.8k0——
Q1 20242$100.0k0——
Q2 20240—0——

None reported in Q2 2024.

Holders, Q2 2024

#ManagerLocationShares Value% of their portfolioChangeShares change
1 Rosalind Advisors, Inc. 12.28% of their portfolio TORONTO, A6 2,650,3892.7m $15.5m $15.5m 12.28% Added +1.6m +1,611,561
2 AIGH Capital Management LLC 9.80% of their portfolio BALTIMORE, MD 2,399,7922.4m $20.1m $20.1m 9.80% Added +40.1k +40,064
3 Vivo Capital, LLC 1.29% of their portfolio Palo Alto, CA 1,666,7461.7m $14.0m $14.0m 1.29% Unchanged
4 VANGUARD GROUP INC 0.00% of their portfolio Valley Forge, PA 996,376996.4k $8.3m $8.3m 0.00% Added +312.7k +312,690
5 ESSEX INVESTMENT MANAGEMENT CO LLC 0.53% of their portfolio BOSTON, MA 335,903335.9k $2.8m $2.8m 0.53% New
6 GEODE CAPITAL MANAGEMENT, LLC 0.00% of their portfolio BOSTON, MA 244,597244.6k $2.0m $2.0m 0.00% Added +21.6k +21,592
7 CIBC WORLD MARKET INC. 0.00% of their portfolio TORONTO, A6 229,074229.1k $1.9m $1.9m 0.00% Reduced -31.2k -31,206
8 ADAR1 Capital Management, LLC 0.33% of their portfolio AUSTIN, TX 198,347198.3k $1.7m $1.7m 0.33% Reduced -20.6k -20,626
9 LASRY MARC 1.06% of their portfolio NEW YORK, NY 161,827161.8k $1.1m $1.1m 1.06% New
10 Shellback Capital, LP 0.10% of their portfolio Boston, MA 161,688161.7k $1.4m $1.4m 0.10% New
11 CITADEL ADVISORS LLC 0.00% of their portfolio MIAMI, FL 152,922152.9k $1.3m $1.3m 0.00% Added +110.0k +110,013
12 Legato Capital Management LLC 0.13% of their portfolio San Francisco, CA 115,463115.5k $966.4k $966.4k 0.13% New
13 BlackRock Inc. 0.00% of their portfolio New York, NY 115,172115.2k $964.0k $964.0k 0.00% Added +24.1k +24,098
14 MORGAN STANLEY 0.00% of their portfolio NEW YORK, NY 103,133103.1k $863.2k $863.2k 0.00% Reduced -181.2k -181,249
15 Ikarian Capital, LLC 0.26% of their portfolio DALLAS, TX 100,370100.4k $840.1k $840.1k 0.26% New
16 MARSHALL WACE, LLP 0.00% of their portfolio LONDON, X0 92,73192.7k $776.2k $776.2k 0.00% Added +6.1k +6,066
17 Informed Momentum Co LLC 0.12% of their portfolio SOLANA BEACH, CA 87,20887.2k $729.9k $729.9k 0.12% New
18 RENAISSANCE TECHNOLOGIES LLC 0.00% of their portfolio NEW YORK, NY 82,90082.9k $693.9k $693.9k 0.00% New
19 STATE STREET CORP 0.00% of their portfolio BOSTON, MA 76,05776.1k $636.6k $636.6k 0.00% Added +7.3k +7,300
20 Hunting Hill Global Capital, LLC 0.28% of their portfolio New York, NY 68,40268.4k $572.5k $572.5k 0.28% Reduced -36.0k -35,996
21 NORTHERN TRUST CORP 0.00% of their portfolio CHICAGO, IL 64,74164.7k $541.9k $541.9k 0.00% Added +1.6k +1,643
22 Cubist Systematic Strategies, LLC 0.01% of their portfolio STAMFORD, CT 44,22244.2k $370.1k $370.1k 0.01% New
23 GOLDMAN SACHS GROUP INC 0.00% of their portfolio NEW YORK, NY 39,06239.1k $326.9k $326.9k 0.00% New
24 SUSQUEHANNA INTERNATIONAL GROUP, LLP 0.00% of their portfolio BALA CYNWYD, PA 33,36233.4k $279.2k $279.2k 0.00% New
25 Jump Financial, LLC 0.01% of their portfolio Chicago, IL 32,20032.2k $269.5k $269.5k 0.01% New
26 MILLENNIUM MANAGEMENT LLC 0.00% of their portfolio NEW YORK, NY 28,87628.9k $241.7k $241.7k 0.00% Reduced -7.8k -7,850
27 WOLVERINE TRADING, LLC 0.00% of their portfolio CHICAGO, IL 28,35828.4k $237.4k $237.4k 0.00% Added +15.0k +14,955
28 BOOTHBAY FUND MANAGEMENT, LLC 0.01% of their portfolio NEW YORK, NY 26,68826.7k $223.4k $223.4k 0.01% New
29 TWO SIGMA INVESTMENTS, LP 0.00% of their portfolio NEW YORK, NY 25,46625.5k $213.2k $213.2k 0.00% Added +12.5k +12,507
30 Verition Fund Management LLC 0.00% of their portfolio GREENWICH, CT 21,83521.8k $182.8k $182.8k 0.00% New
31 WealthPlan Investment Management, LLC 0.02% of their portfolio OMAHA, NE 17,44317.4k $146.0k $146.0k 0.02% Unchanged
32 SIMPLEX TRADING, LLC 0.00% of their portfolio CHICAGO, IL 15,27915.3k $127.0k $127.0k 0.00% Added +4.3k +4,342
33 LEVIN CAPITAL STRATEGIES, L.P. 0.01% of their portfolio NEW YORK, NY 15,00015.0k $125.5k $125.5k 0.01% Reduced -40.0k -39,969
34 Engineers Gate Manager LP 0.00% of their portfolio NEW YORK, NY 10,65010.7k $89.1k $89.1k 0.00% Reduced -642 -642
35 Qube Research & Technologies Ltd 0.00% of their portfolio LONDON, X0 10,55310.6k $88.3k $88.3k 0.00% New
36 LANARK FINANCIAL, INC. 0.01% of their portfolio BIRMINGHAM, AL 10,00010.0k $83.0k $83.0k 0.01% New
37 UBS Group AG 0.00% of their portfolio ZURICH, V8 9,4029.4k $78.7k $78.7k 0.00% Added +8.6k +8,604
38 Quantbot Technologies LP 0.00% of their portfolio NEW YORK, NY 7,1417.1k $59.8k $59.8k 0.00% New
39 WELLS FARGO & COMPANY/MN 0.00% of their portfolio SAN FRANCISCO, CA 2,9533.0k $24.7k $24.7k 0.00% Added +78 +78
40 nVerses Capital, LLC 0.01% of their portfolio WELLINGTON, FL 1,5001.5k $12.6k $12.6k 0.01% New
41 BANK OF AMERICA CORP /DE/ 0.00% of their portfolio CHARLOTTE, NC 1,3321.3k $11.1k $11.1k 0.00% Added +1.3k +1,330
42 Investors Research Corp 0.00% of their portfolio ATLANTA, GA 1,1001.1k $9.2k $9.2k 0.00% Reduced -1.8k -1,800
43 Activest Wealth Management 0.00% of their portfolio AVENTURA, FL 1,0001.0k $8.4k $8.4k 0.00% New
44 Quent Capital, LLC 0.00% of their portfolio NEW YORK, NY 949949 $7.9k $7.9k 0.00% Added +430 +430
45 OSAIC HOLDINGS, INC. 0.00% of their portfolio SCOTTSDALE, AZ 820820 $6.9k $6.9k 0.00% Added +149 +149
46 SIGNATUREFD, LLC 0.00% of their portfolio ATLANTA, GA 300300 $2.5k $2.5k 0.00% New
47 Tower Research Capital LLC (TRC) 0.00% of their portfolio NEW YORK, NY 259259 $2.2k $2.2k 0.00% Reduced -6.7k -6,725
48 ROYAL BANK OF CANADA 0.00% of their portfolio TORONTO, A6 187187 $2.0k $2.0k 0.00% Reduced -3.3k -3,313
49 Allworth Financial LP 0.00% of their portfolio FOLSOM, CA 100100 $823 $823 0.00% Unchanged
50 Lindbrook Capital, LLC 0.00% of their portfolio CALABASAS, CA 66 $50 $50 0.00% Unchanged
51 AllSquare Wealth Management LLC 0.00% of their portfolio ALBANY, NY 11 $8 $8 0.00% Unchanged
52 Parallel Advisors, LLC 0.00% of their portfolio SAN FRANCISCO, CA 11 $8 $8 0.00% Unchanged
53 CONCOURSE FINANCIAL GROUP SECURITIES, INC. 0.00% of their portfolio BIRMINGHAM, AL 00 $0 $0 0.00% Unchanged