Vault-13

SURO CAPITAL CORP NSLR

COM NEW · Common Stock · CUSIP 86887Q109

80 institutional holders +7 vs Q1 2026
6,753,6086.8m shares reported held*
25.5% of all shares outstanding*
$84.6mreported value*
19 new 22 added 23 reduced 12 sold out net bought ≈ $17.5m (+1.4m 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: 26.5m as of 2026-08-05, 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 ≈ $12.52. Options: 5 managers hold calls ($2.7m notional), 6 hold puts ($2.2m).

Trends to Q2 2026

Institutional holders

Managers reporting a position, each quarter

050100Q3 22: 70Q4 22: 75Q1 23: 71Q2 23: 61Q3 23: 57Q4 23: 55Q1 24: 49Q2 24: 45Q3 24: 45Q4 24: 56Q1 25: 59Q2 25: 58Q3 25: 73Q4 25: 70Q1 26: 73Q2 26: 8080Q3 22Q3 23Q3 24Q3 25Q2 26
Numbers
QuarterHolders
Q3 202270
Q4 202275
Q1 202371
Q2 202361
Q3 202357
Q4 202355
Q1 202449
Q2 202445
Q3 202445
Q4 202456
Q1 202559
Q2 202558
Q3 202573
Q4 202570
Q1 202673
Q2 202680

Buyers vs sellers

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

Bought or addedCut or sold out
50050Q3 24: 19 bought or addedQ3 24: 13 cut or sold outQ4 24: 31 bought or addedQ4 24: 17 cut or sold outQ4 24Q1 25: 35 bought or addedQ1 25: 18 cut or sold outQ2 25: 28 bought or addedQ2 25: 28 cut or sold outQ2 25Q3 25: 45 bought or addedQ3 25: 25 cut or sold outQ4 25: 35 bought or addedQ4 25: 31 cut or sold outQ4 25Q1 26: 35 bought or addedQ1 26: 38 cut or sold outQ2 26: 41 bought or addedQ2 26: 35 cut or sold outQ2 26
Numbers
QuarterBought or addedCut or sold out
Q3 20241913
Q4 20243117
Q1 20253518
Q2 20252828
Q3 20254525
Q4 20253531
Q1 20263538
Q2 20264135

Calls vs puts

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

CallsPuts
$0$1m$2m$3mQ3 25 calls: $2.1mQ3 25 puts: $476.1kQ3 25P/C 0.23Q4 25 calls: $938.3kQ4 25 puts: $1.0mQ4 25P/C 1.07Q1 26 calls: $2.1mQ1 26 puts: $1.2mQ1 26P/C 0.60Q2 26 calls: $2.7mQ2 26 puts: $2.2mQ2 26P/C 0.82
Numbers
QuarterCallsPutsP/C
Q3 2025$2.1m$476.1k0.23
Q4 2025$938.3k$1.0m1.07
Q1 2026$2.1m$1.2m0.60
Q2 2026$2.7m$2.2m0.82

Biggest buyers

Biggest sellers

J. Goldman & Co LP Sold out -120,700-120.7k
GABELLI FUNDS LLC Reduced -77,046-77.0k
ACADIAN ASSET MANAGEMENT LLC Sold out -71,188-71.2k
INTRINSIC EDGE CAPITAL MANAGEMENT LLC Sold out -40,764-40.8k
Invesco Ltd. Reduced -25,097-25.1k
INTREPID FAMILY OFFICE LLC Reduced -25,000-25.0k
CITADEL ADVISORS LLC Sold out -22,779-22.8k
Squarepoint Ops LLC Sold out -22,172-22.2k
Coastal Bridge Advisors, LLC Sold out -11,274-11.3k
Hillsdale Investment Management Inc. Reduced -11,000-11.0k

Biggest calls

SUSQUEHANNA INTERNATIONAL GROUP, LLP Added $1.2m98.9k shares
IMC-Chicago, LLC Added $581.9k46.4k shares
GROUP ONE TRADING LLC Reduced $461.5k36.8k shares
CITADEL ADVISORS LLC New $289.7k23.1k shares
SIMPLEX TRADING, LLC Added $155.5k12.4k shares

Biggest puts

SUSQUEHANNA INTERNATIONAL GROUP, LLP Added $968.1k77.2k shares
JANE STREET GROUP, LLC New $504.1k40.2k shares
IMC-Chicago, LLC Added $437.6k34.9k shares
CITADEL ADVISORS LLC Added $253.3k20.2k shares
SIMPLEX TRADING, LLC Added $55.2k4.4k shares
GROUP ONE TRADING LLC Reduced $18.8k1.5k 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
GAMCO INVESTORS, INC. ET AL 13D · may seek influence +1.1 pts · filed 2026-09-16
Stated purposeThe Reporting Persons file the long form Schedule 13D pursuant to Section 13d-1 of the Securities Exchange Act of 1934 (the "Act") even though they may be technically eligible to file the short form Schedule G. Because the Reporting Persons may regularly communicate with the Issuer's management, filing the Schedule 13D ensures that these conversations are compliant with the reporting obligations under the Exchange Act. Full filing
6.1% +1.1 pts 1.6m≈ $20.2m 2026-09-16

Insider purchases and sales since 1 Apr 2026

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
202Q4 24: 2 buyingQ4 24: 1 sellingQ1 25: 0 buyingQ1 25: 1 sellingQ1 25Q2 25: 1 buyingQ2 25: 1 sellingQ3 25: 1 buyingQ3 25: 1 sellingQ3 25Q4 25: 0 buyingQ4 25: 0 sellingQ1 26: 0 buyingQ1 26: 0 sellingQ1 26Q2 26: 1 buyingQ2 26: 1 sellingQ3 26: 2 buyingQ3 26: 1 sellingQ3 26
Numbers
QuarterBuyingBoughtSellingSoldSold under a plan
Q4 20242$471.6k1$2.6k—
Q1 20250—1$59.0k—
Q2 20251$86.8k1$289—
Q3 20251$124.2k1$66.1k—
Q4 20250—0——
Q1 20260—0——
Q2 20261$65.8k1$143.8k—
Q3 20262$800.5k1$50.6k—
DateInsiderTradeSharesPrice ValueTheir holding
2026-09-21 Klein Mark D Chairman, CEO and President, director Bought 5,000 $7.91 $39.5k5.0k shares +<1%
2026-09-03 LOTT RONALD M. Director · By Family Trust Sold 5,085 $9.96 $50.6k5.1k shares -24%
2026-08-26 Falk Erik A Director · By revocable trust Bought 50,000 $10.22 $511.0k50.0k shares new
2026-08-10 Klein Mark D Chairman, CEO and President, director Bought 26,040 $9.60 $250.0k26.0k shares +2%
2026-06-23 LOTT RONALD M. Director Sold 500 $12.35 $6.2k500 shares -14%
2026-04-28 LOTT RONALD M. Director · By Family Trust Sold 10,669 $12.90 $137.6k10.7k shares -50%
2026-04-22 Klein Mark D Chairman, CEO and President, director Bought 2,500 $13.25 $33.1k2.5k shares +<1%
2026-04-21 Klein Mark D Chairman, CEO and President, director Bought 2,500 $13.08 $32.7k2.5k shares +<1%

Their holding: how much the trade added to or took from the insider's holding (direct, or the trust or fund named). The same trade is sometimes reported by more than one insider, such as a fund and the director who represents it; totals count it once. A value is left blank where the reported price is far from the market price (usually a typo).

Holders, Q2 2026

#ManagerLocationShares Value% of their portfolioChangeShares change
1 GABELLI FUNDS LLC 0.10% of their portfolio Rye, NY 1,227,0561.2m $15.4m $15.4m 0.10% Reduced -77.0k -77,046
2 Thomas J. Herzfeld Advisors, Inc. 3.03% of their portfolio MIAMI BEACH, FL 788,403788.4k $9.9m $9.9m 3.03% Added +755.9k +755,885
3 Kingsview Wealth Management, LLC 0.09% of their portfolio GRANTS PASS, OR 564,301564.3k $7.1m $7.1m 0.09% Added +299.0k +299,043
4 GatePass Capital, LLC 2.43% of their portfolio INDEPENDENCE, OH 508,150508.1k $6.4m $6.4m 2.43% Added +2.2k +2,250
5 NEEDHAM INVESTMENT MANAGEMENT LLC 0.16% of their portfolio NEW YORK, NY 426,594426.6k $5.3m $5.3m 0.16% Unchanged
6 FRANKLIN RESOURCES INC 0.00% of their portfolio San Mateo, CA 290,917290.9k $3.6m $3.6m 0.00% Reduced -9.8k -9,778
7 MGO ONE SEVEN LLC 0.05% of their portfolio Beachwood, OH 258,244258.2k $3.2m $3.2m 0.05% Reduced -3.7k -3,727
8 GAMCO INVESTORS, INC. ET AL 0.03% of their portfolio GREENWICH, CT 243,500243.5k $3.1m $3.1m 0.03% Reduced -1.0k -1,000
9 JANE STREET GROUP, LLC 0.00% of their portfolio NEW YORK, NY 237,011237.0k $3.0m $3.0m 0.00% Added +40.0k +39,958
10 LPL Financial LLC 0.00% of their portfolio FORT MILL, SC 208,699208.7k $2.6m $2.6m 0.00% Added +6.2k +6,226
11 TWO SIGMA INVESTMENTS, LP 0.00% of their portfolio NEW YORK, NY 200,359200.4k $2.5m $2.5m 0.00% Added +146.3k +146,264
12 LAZARD ASSET MANAGEMENT LLC 0.00% of their portfolio NEW YORK, NY 111,690111.7k $1.4m $1.4m 0.00% New
13 INTREPID FAMILY OFFICE LLC 1.16% of their portfolio SARASOTA, FL 100,000100.0k $1.3m $1.3m 1.16% Reduced -25.0k -25,000
14 WEALTH ENHANCEMENT ADVISORY SERVICES, LLC 0.00% of their portfolio PLYMOUTH, MN 91,23691.2k $1.0m $1.0m 0.00% New
15 BlackRock, Inc. 0.00% of their portfolio New York, NY 87,95488.0k $1.1m $1.1m 0.00% Reduced -2.2k -2,202
16 Balyasny Asset Management L.P. 0.00% of their portfolio Chicago, IL 86,59486.6k $1.1m $1.1m 0.00% New
17 MANGROVE PARTNERS IM, LLC 0.06% of their portfolio Greenwich, CT 73,35173.4k $919.8k $919.8k 0.06% Added +26.8k +26,772
18 Private Advisor Group, LLC 0.00% of their portfolio MORRISTOWN, NJ 71,85671.9k $901.1k $901.1k 0.00% Added +2.8k +2,822
19 MORGAN STANLEY 0.00% of their portfolio NEW YORK, NY 70,17270.2k $880.0k $880.0k 0.00% Added +4.3k +4,286
20 Janney Montgomery Scott LLC 0.00% of their portfolio PHILADELPHIA, PA 59,47259.5k $746.0k $746.0k 0.00% Unchanged
21 Green Alpha Advisors, LLC 0.50% of their portfolio NIWOT, CO 59,37559.4k $744.6k $744.6k 0.50% Added +764 +764
22 WELLS FARGO & COMPANY/MN 0.00% of their portfolio SAN FRANCISCO, CA 55,91655.9k $701.2k $701.2k 0.00% Added +13.4k +13,440
23 SUSQUEHANNA INTERNATIONAL GROUP, LLP 0.00% of their portfolio BALA CYNWYD, PA 52,54152.5k $658.9k $658.9k 0.00% New
24 Stratos Wealth Partners, LTD. 0.01% of their portfolio BEACHWOOD, OH 47,54347.5k $596.2k $596.2k 0.01% Reduced -4.4k -4,372
25 HARBOR CAPITAL ADVISORS, INC. 0.04% of their portfolio CHICAGO, IL 47,22747.2k $592.0k $592.0k 0.04% Reduced -3.6k -3,623
26 XTX Topco Ltd 0.01% of their portfolio LONDON, X0 46,47146.5k $582.7k $582.7k 0.01% Added +10.1k +10,133
27 Connor, Clark & Lunn Investment Management Ltd. 0.00% of their portfolio VANCOUVER, A1 43,52143.5k $545.8k $545.8k 0.00% New
28 MILLENNIUM MANAGEMENT LLC 0.00% of their portfolio NEW YORK, NY 43,31743.3k $543.2k $543.2k 0.00% New
29 Catalyst Capital Advisors LLC 0.01% of their portfolio San Juan, PR 42,46642.5k $532.5k $532.5k 0.01% Unchanged
30 Invesco Ltd. 0.00% of their portfolio ATLANTA, GA 40,56740.6k $508.7k $508.7k 0.00% Reduced -25.1k -25,097
31 Cresset Asset Management, LLC 0.00% of their portfolio Chicago, IL 36,41136.4k $456.6k $456.6k 0.00% Added +3.5k +3,530
32 Pathstone Holdings, LLC 0.00% of their portfolio ENGLEWOOD, NJ 32,66432.7k $408.4k $408.4k 0.00% Added +366 +366
33 O'SHAUGHNESSY ASSET MANAGEMENT, LLC 0.00% of their portfolio Stamford, CT 31,36031.4k $393.3k $393.3k 0.00% Added +5.4k +5,377
34 NORTHERN TRUST CORP 0.00% of their portfolio CHICAGO, IL 31,26231.3k $392.0k $392.0k 0.00% Unchanged
35 Tactive Advisors, LLC 0.09% of their portfolio Jacksonville, FL 30,31130.3k $380.1k $380.1k 0.09% Added +12.1k +12,111
36 UBS Group AG 0.00% of their portfolio ZURICH, V8 29,36829.4k $368.3k $368.3k 0.00% Reduced -2.5k -2,545
37 OSAIC HOLDINGS, INC. 0.00% of their portfolio SCOTTSDALE, AZ 29,07729.1k $364.7k $364.7k 0.00% Added +25.4k +25,374
38 Texas Capital Bank Wealth Management Services Inc 0.02% of their portfolio Dallas, TX 28,00028.0k $351.1k $351.1k 0.02% Unchanged
39 CANADA LIFE ASSURANCE Co 0.00% of their portfolio WINNIPEG, A2 27,46527.5k $343.0k $343.0k 0.00% Added +2.3k +2,266
40 Wellington Shields & Co., LLC 0.07% of their portfolio NEW YORK, NY 26,02326.0k $326.3k $326.3k 0.07% Reduced -315 -315
41 RITHOLTZ WEALTH MANAGEMENT 0.00% of their portfolio NEW YORK, NY 23,64423.6k $296.5k $296.5k 0.00% Reduced -620 -620
42 Trexquant Investment LP 0.00% of their portfolio STAMFORD, CT 22,27422.3k $279.3k $279.3k 0.00% Reduced -10.7k -10,672
43 Granahan Investment Management, LLC 0.01% of their portfolio WALTHAM, MA 21,54921.5k $270.2k $270.2k 0.01% Unchanged
44 Byrne Asset Management LLC 0.14% of their portfolio KINGSTON, NJ 21,15021.1k $265.2k $265.2k 0.14% Reduced -2.9k -2,890
45 Brookwood Investment Group LLC 0.03% of their portfolio PHOENIX, AZ 21,00021.0k $263.3k $263.3k 0.03% New
46 De Lisle Partners LLP 0.03% of their portfolio POOLE, X0 20,00020.0k $250.8k $250.8k 0.03% New
47 Hillsdale Investment Management Inc. 0.01% of their portfolio Toronto, A6 18,90018.9k $237.0k $237.0k 0.01% Reduced -11.0k -11,000
48 Perigon Wealth Management, LLC 0.00% of their portfolio SAN FRANCISCO, CA 16,60016.6k $208.2k $208.2k 0.00% New
49 Point72 Asset Management, L.P. 0.00% of their portfolio STAMFORD, CT 16,34816.3k $205.0k $205.0k 0.00% New
50 HAZLETT, BURT & WATSON, INC. 0.05% of their portfolio WHEELING, WV 14,60514.6k $184.0k $184.0k 0.05% Reduced -325 -325
51 RAYMOND JAMES FINANCIAL INC 0.00% of their portfolio ST. PETERSBURG, FL 13,59313.6k $170.5k $170.5k 0.00% Added +1.1k +1,107
52 HRT FINANCIAL LP 0.00% of their portfolio NEW YORK, NY 10,57610.6k $132.0k $132.0k 0.00% Reduced -6.2k -6,184
53 Marex Group Ltd 0.00% of their portfolio London, X0 10,00010.0k $125.4k $125.4k 0.00% Reduced -6.0k -6,001
54 Farther Finance Advisors, LLC 0.00% of their portfolio SAN FRANCISCO, CA 6,8256.8k $85.6k $85.6k 0.00% Reduced -153 -153
55 ROYAL BANK OF CANADA 0.00% of their portfolio TORONTO, A6 4,8764.9k $61.0k $61.0k 0.00% Added +3.3k +3,263
56 JPMORGAN CHASE & CO 0.00% of their portfolio NEW YORK, NY 3,1193.1k $39.8k $39.8k 0.00% Added +34 +34
57 Avion Wealth 0.01% of their portfolio THE WOODLANDS, TX 3,0013.0k $37.0k $37.0k 0.01% Unchanged
58 Institute for Wealth Management, LLC. 0.00% of their portfolio DENVER, CO 2,9733.0k $37.3k $37.3k 0.00% New
59 Federation des caisses Desjardins du Quebec 0.00% of their portfolio LEVIS, A8 2,0002.0k $25.1k $25.1k 0.00% New
60 Hickory Point Bank & Trust 0.02% of their portfolio DECATUR, IL 2,0002.0k $25.1k $25.1k 0.02% Unchanged
61 SIMPLEX TRADING, LLC 0.00% of their portfolio CHICAGO, IL 1,9221.9k $24.1k $24.1k 0.00% New
62 HARBOUR INVESTMENTS, INC. 0.00% of their portfolio MADISON, WI 1,7291.7k $21.7k $21.7k 0.00% Reduced -11 -11
63 Strive Financial Group ,LLC 0.01% of their portfolio CARMEL, IN 1,6951.7k $21.3k $21.3k 0.01% Unchanged
64 Pinnacle Holdings, LLC 0.01% of their portfolio TULSA, OK 1,3291.3k $16.7k $16.7k 0.01% New
65 N.E.W. Advisory Services LLC 0.00% of their portfolio DE PERE, WI 1,1001.1k $13.8k $13.8k 0.00% Unchanged
66 NATIONAL BANK OF CANADA /FI/ 0.00% of their portfolio MONTREAL, A8 925925 $11.6k $11.6k 0.00% New
67 JONES FINANCIAL COMPANIES LLLP 0.00% of their portfolio DES PERES, MO 835835 $9.9k $9.9k 0.00% Reduced -258 -258
68 MCF Advisors LLC 0.00% of their portfolio LEXINGTON, KY 785785 $9.8k $9.8k 0.00% New
69 NOMURA ASSET MANAGEMENT CO LTD 0.00% of their portfolio TOKYO, M0 714714 $9.0k $9.0k 0.00% Reduced -162 -162
70 WealthCollab, LLC 0.00% of their portfolio BELLEVUE, WA 401401 $5.0k $5.0k 0.00% New
71 Clearstead Advisors, LLC 0.00% of their portfolio CLEVELAND, OH 195195 $2.4k $2.4k 0.00% New
72 Allworth Financial LP 0.00% of their portfolio FOLSOM, CA 175175 $2.2k $2.2k 0.00% Reduced -318 -318
73 Geneos Wealth Management Inc. 0.00% of their portfolio ENGLEWOOD, CO 100100 $1.3k $1.3k 0.00% Unchanged
74 Citizens National Bank Trust Department 0.00% of their portfolio MERIDIAN, MS 7878 $978 $978 0.00% Unchanged
75 Intesa Sanpaolo S.p.A. 0.00% of their portfolio TURIN, L6 7373 $915 $915 0.00% Unchanged
76 Atlantic Union Bankshares Corp 0.00% of their portfolio GLEN ALLEN, VA 5959 $737 $737 0.00% Unchanged
77 Steward Partners Investment Advisory, LLC 0.00% of their portfolio STAMFORD, CT 88 $100 $100 0.00% New
78 Caitong International Asset Management Co., Ltd 0.00% of their portfolio HONG KONG, K3 77 $88 $88 0.00% Added +6 +6
79 HUNTINGTON NATIONAL BANK 0.00% of their portfolio COLUMBUS, OH 11 $13 $13 0.00% Unchanged
80 NFSG Corp 0.00% of their portfolio BOCA RATON, FL 00 $5 $5 0.00% Unchanged