Isabella Capital Management LLP holds a concentrated book of 7 reported positions worth $148.4M as of Q2 2026 (disclosed Aug 3, 2026, a ~34-day 13F lag). This quarter they opened Weibo Corp. Their largest long position is Alibaba Group Holding at 57% of the reported non-option book. They also disclosed $40.0M in put options (a bearish bet), shown separately below and excluded from the non-option book. Cloning the disclosed picks since 2026 would be -1% (-2.1%/yr). That is a simulation of the disclosed long book, not audited returns.
Growth of $10,000 cloning Isabella Capital Management LLP's disclosed long 13F book, rebalanced on each filing date (so it reflects each quarter's actual reporting lag, ~34 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.
Top-heavy: concentrated book
Excluding Alibaba Group Holding (57% of the book), the rest is a concentrated book:
Share of the disclosed book in its largest positions. A higher top-5 share means a more concentrated, higher-conviction portfolio.
0% mapped to company sectors
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.
Estimated $ traded · quarter-end prices (an exit at the prior quarter-end), no cost basis
Other tracked managers holding the same core names as Isabella Capital Management LLP
| Manager / fund | Shared names | Their $ in those |
|---|---|---|
| Acasta Partners UK LLP | 2 / 7 | $101.5M |
| Mariner Investment Group LLC | 2 / 7 | $37.4M |
| Whitebox Advisors LLC | 3 / 7 | $495.7M |
| Highbridge Capital Management LLC | 5 / 7 | $254.7M |
| Ssi Investment Management LLC | 3 / 7 | $89.8M |
| Context Capital Management, LLC | 4 / 7 | $252.5M |
| Sentinel Dome Partners, LLC | 2 / 7 | $6.4M |
| Mackay Shields LLC | 2 / 7 | $135.2M |
Ranked by the share of each fund's own book sitting in the names it shares with Isabella Capital Management LLP: 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.
Bars show each position's share of the portfolio. Click a row for its position history.
| # | Security | Value | Shares | % Port | Last move | History |
|---|---|---|---|---|---|---|
| 1 | Alibaba Group Hldg Ltd NOTE 0.500% 6/0 | $83.9M | 71.00M | 56.5% | ▲+158% Added · +43.5M sh | |
| 2 | Mara Holdings Inc NOTE 2.125% 9/0 | $28.0M | 25.00M | 18.8% | ▲+85% Added · +11.5M sh | |
| 3 | Ishares TR IBOXX HI YD ETF | $15.6M | 195.0K | 10.5% | ▲+11% Added · +20K sh | |
| 4 | Weibo Corp NOTE 1.375%12/0 | $15.0M | 15.00M | 10.1% | ▲New New position | |
| 5 | Super Micro Computer Inc NOTE 6/1 | $4.9M | 5.50M | 3.3% | ▲New New position | |
| 6 | Alphabet Inc DEP SHS RP1/20 A | $506K | 10.0K | 0.3% | ▲New New position | |
| 7 | Alphabet Inc DEP SHS RP1/20 B | $501K | 10.0K | 0.3% | ▲New New position |
This fund page is the Follow view. The Build view lets your agent pull holdings, quarter changes, overlap, and source filings through API or MCP.
curl -H "Authorization: Bearer YOUR_API_KEY" \ "https://arkolith.com/api/v1/funds/2134988/holdings"
Use Arkolith to show Isabella Capital Management LLP's latest holdings, largest changes, and filing provenance.
Put / call positions from the 13F — totals include every disclosed option leg
| Type | Underlying | Notional value | Underlying shares |
|---|---|---|---|
| PUT · bearish | ISHR IBX USD HIYLD CB ETF-UIHYG | $40.0M | 500K |
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.
As-of date vs the date the SEC received each filing
Reported 13F total per quarter. Raw filing totals can include option notional.
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.