Arkolith/Funds/Basso Capital Management, L.P.

Basso Capital Management, L.P.

CIK 1287978
Holdings as of Jun 30, 2026·disclosed Jul 27, 2026·~27-day 13F lag·13F-HR
Active Filer

Basso Capital Management, L.P. holds a focused book of 135 reported positions worth $405.9M as of Q2 2026 (disclosed Jul 27, 2026, a ~27-day 13F lag). This quarter they opened Ishares Msci USA Value Facto and trimmed SS SPDR S&P 500 ETF Trust-US. Their largest long position is Vanguard S&P 500 ETF at 12% of the reported non-option book. They also disclosed $62.9M in put options (a bearish bet), shown separately below and excluded from the non-option book. Cloning the disclosed picks since 2024 would be +30% (+15.5%/yr). That is a simulation of the disclosed long book, not audited returns.

Growth of $10,000: cloning the disclosed book

If you'd copied them
+30.0%
+15.5%/yr · since Nov '24
Their reported book
+29.9%
held from quarter-end
S&P 500
+30.6%
same window
$8K$10K$11K$12K$13KNov '24Mar '25Aug '25Dec '25May '26Sep '26
Basso Capital Management, L.P. (copied at disclosure) S&P 500

Growth of $10,000 cloning Basso Capital Management, L.P.'s disclosed long 13F book, rebalanced on each filing date (so it reflects each quarter's actual reporting lag, ~27 days for the latest filing, with no look-ahead), total-return basis (dividends reinvested), derived from end-of-day prices. “Their reported book” values the same picks from quarter-end, before they were public. S&P 500 is SPY total return over the same window. Excludes shorts, cash, options and non-13F holdings. Not investment advice.

How much sits in the biggest positions

Top-heavy: focused book

Top 5 holdings
33%
Top 10 holdings
48%
Top 20 holdings
67%

Share of the disclosed book in its largest positions. A higher top-5 share means a more concentrated, higher-conviction portfolio.

Where the money is, by sector

9% mapped to company sectors

ETFs / funds
90%
Financials
4%
Information Technology
3%
No sector on file yet
1%
Industrials
1%

+7 sectors below the cut, 1% together

Direct operating-company sectors from our SIC-based security master. ETF/fund and unclassified holdings stay visible separately; this is not ETF look-through exposure.

Biggest moves: latest quarter

Estimated $ traded · quarter-end prices (an exit at the prior quarter-end), no cost basis

Bought
Trimmed / exited

Funds with the most overlap

Other tracked managers holding the same core names as Basso Capital Management, L.P.

Manager / fundShared namesTheir $ in those
Swiss Re Ltd11 / 80$1.0B
Constellation Investments, Inc.8 / 80$2.7B
MKP Capital Management, L.L.C.8 / 80$3.1B
Ackerman Asset Management, LLC12 / 80$134.2M
Ashford Advisors, LLC8 / 80$369.1M
Fortune 45 LLC11 / 80$174.1M
Potomac Fund Management Inc14 / 80$2.9B
GR Financial Group, LLC11 / 80$531.1M

Ranked by the share of each fund's own book sitting in the names it shares with Basso Capital Management, L.P.: only funds sharing at least a tenth of the book qualify. Index giants, bank custody books and market makers are excluded. They hold everything, so their overlap says nothing.

Holdings: largest first

Bars show each position's share of the portfolio. Click a row for its position history.

135 positions
#SecurityValueShares% PortLast moveHistory
1Vanguard Index FDS
S&P 500 ETF SHS
$47.8M69.6K
11.8%
+27%
Added · +15K sh
2Vanguard Index FDS
TOTAL STK MKT
$25.7M69.5K
6.3%
+38%
Added · +19K sh
3Pgim ETF TR
AAA CLO ETF
$25.3M493.6K
6.2%
+190%
Added · +324K sh
4State STR SPDR S&P 500 ETF T
TR UNIT
$19.7M26.4K
4.9%
−1.4%
Reduced · −381 sh
5Ishares TR
RUSSELL 2000 ETF
$14.4M47.8K
3.5%
+18%
Added · +7K sh
6Invesco Exchange Traded FD T
S&P500 EQL WGT
$14.3M67.4K
3.5%
+39%
Added · +19K sh
7Ishares TR
MSCI USA VALUE
$13.8M69.0K
3.4%
New
New position
8Invesco Exch Traded FD TR II
S&P 500 MOMNTM
$11.5M71.2K
2.8%
New
New position
9Vaneck ETF Trust
SEMICONDUCTR ETF
$10.9M16.7K
2.7%
New
New position
10Ishares TR
INTL SEL DIV ETF
$10.7M259.4K
2.6%
New
New position
11SPDR Gold TR
GOLD SHS
$9.8M26.6K
2.4%
+11%
Added · +3K sh
12Ishares TR
CORE S&P500 ETF
$9.5M12.7K
2.3%
New
New position
13Ishares TR
RUS TP200 GR ETF
$8.6M29.5K
2.1%
New
New position
14Ishares TR
S&P 100 ETF
$8.6M23.4K
2.1%
78×
Added · +23K sh
15Invesco Exch Traded FD TR II
NASDAQ 100 ETF
$8.4M27.6K
2.1%
+861%
Added · +25K sh
16American Centy ETF TR
INTL SMCP VLU
$8.3M80.3K
2.0%
New
New position
17Invesco QQQ TR
UNIT SER 1
$6.8M9.3K
1.7%
+645%
Added · +8K sh
18SPDR Series Trust
ST STR P500ETF
$6.8M77.5K
1.7%
133×
Added · +77K sh
19Ishares Inc
MSCI EMRG CHN
$6.4M62.2K
1.6%
+48%
Added · +20K sh
20Fundx Invt TR
FUNDX ETF
$5.9M64.8K
1.4%
New
New position
21Invesco Exchange Traded FD T
S&P 500 TOP 50
$5.3M86.8K
1.3%
New
New position
22Alphabet Inc
CAP STK CL A
$4.7M13.3K
1.2%
+17%
Added · +2K sh
23Ishares Inc
MSCI STH KOR ETF
$4.3M21.4K
1.1%
+112%
Added · +11K sh
24Ishares TR
MSCI USA MMENTM
$4.3M12.4K
1.1%
New
New position
25DBX ETF TR
XTRACKRS S&P 500
$3.7M54.1K
0.9%
New
New position
26Ishares TR
CORE 60 BALA ETF
$3.7M53.3K
0.9%
New
New position
27Schwab Strategic TR
US BRD MKT ETF
$3.5M121.3K
0.9%
74×
Added · +120K sh
28Vanguard World FD
MEGA GRWTH IND
$3.3M37.1K
0.8%
New
New position
29Fundx Invt TR
CONSERVATIVE ETF
$3.2M64.5K
0.8%
New
New position
30Ishares TR
CORE 40 MODE ETF
$3.1M62.5K
0.8%
New
New position
31Series Portfolios TR
ELDRIDGE BBB B
$3.1M116.5K
0.8%
+164%
Added · +72K sh
32Janus Detroit STR TR
HENDRSON AAA CL
$3.1M60.4K
0.8%
19×
Added · +57K sh
33Apple Inc
COM
$3.0M10.5K
0.8%
17×
Added · +10K sh
34Schwab Strategic TR
FUNDAMENTAL INTL
$3.0M57.1K
0.7%
New
New position
35Ishares TR
ESG MSCI KLD ETF
$2.9M20.1K
0.7%
New
New position
36Ishares TR
CORE S&P MCP ETF
$2.8M36.8K
0.7%
+194%
Added · +24K sh
37Ishares TR
ISHS 5-10YR INVT
$2.8M52.8K
0.7%
New
New position
38Ishares TR
MORNINGSTAR GRWT
$2.8M23.6K
0.7%
New
New position
39Schwab Strategic TR
US LCAP GR ETF
$2.7M80.6K
0.7%
116×
Added · +80K sh
40Ishares TR
JPMORGAN USD EMG
$2.4M24.6K
0.6%
New
New position
41Vanguard Index FDS
GROWTH ETF
$2.3M26.2K
0.6%
New
New position
42Invesco Exch Traded FD TR II
RAFI DVLPD MRKTS
$2.2M29.5K
0.5%
New
New position
43Ishares TR
ESG OPTIMIZED
$2.2M14.2K
0.5%
New
New position
44BlackRock ETF Trust II
ISHARES AAA CLO
$2.2M41.7K
0.5%
New
New position
45Schwab Strategic TR
US LRG CAP ETF
$2.1M71.6K
0.5%
New
New position
46Ishares TR
CORE US AGGBD ET
$1.9M19.2K
0.5%
New
New position
47Ishares TR
CORE 30 70 ETF
$1.7M40.9K
0.4%
New
New position
48JPMorgan Chase & Co
COM
$1.5M4.7K
0.4%
+670%
Added · +4K sh
49Vaneck ETF Trust
AA BB CLO ETF
$1.5M30.1K
0.4%
New
New position
50Invesco Exchange Traded FD T
S&P500 PUR GWT
$1.5M23.6K
0.4%
New
New position
Showing 50 of 135 positions
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Largest options & derivatives disclosed

Put / call positions from the 13F — totals include every disclosed option leg

Put notional (bearish)$62.9M
TypeUnderlyingNotional valueUnderlying shares
PUT · bearishSS SPDR S&P 500 ETF TRUST-USSPY$56.0M75K
PUT · bearishISHARES RUSSELL 2000 ETFIWM$6.6M22K
PUT · bearishSALESFORCE INCCRM$313K2K

13F filers disclose option positions at the market value of the underlying the contracts reference, not the premium paid. A put is a bearish bet (it gains if the stock falls); a call is bullish. “Underlying shares” is the share count the contracts control, not a share holding. These legs are excluded from the non-option book, weighting, concentration and sector figures above.

Filing history

As-of date vs the date the SEC received each filing

$468.8M · Q2 2026Q3 2024 · $108.7MQ2 2026 · $468.8M

Reported 13F total per quarter. Raw filing totals can include option notional.

QuarterAs ofFiledLagPositionsValueForm
Q2 2026Jun 30, 2026Jul 27, 202627d138$468.8M13F-HR
Q1 2026Mar 31, 2026May 15, 202645d137$163.4M13F-HR
Q4 2025Dec 31, 2025Feb 17, 202648d115$167.9M13F-HR
Q3 2025Sep 30, 2025Nov 13, 202544d78$149.4M13F-HR
Q2 2025Jun 30, 2025Aug 13, 202544d77$134.9M13F-HR
Q1 2025Mar 31, 2025May 12, 202542d72$117.5M13F-HR
Q4 2024Dec 31, 2024Feb 10, 202541d75$115.6M13F-HR
Q3 2024Sep 30, 2024Nov 12, 202443d73$108.7M13F-HR

Data source

Holdings from SEC EDGAR 13F-HR filings, updated quarterly, filed up to 45 days after quarter-end. Public domain. Book totals and portfolio weights cover reported non-option positions, which can include notes and warrants. Disclosed put/call options are listed separately and excluded from those totals. The performance line is a simulation of the disclosed long book, not an audited return.