Rossby Financial, LCC holds a diversified book of 2144 stocks worth $547.1M as of Q2 2026 (disclosed Aug 4, 2026, a ~35-day 13F lag). This quarter they opened Seabridge Gold Inc and trimmed SS SPDR S&P 500 ETF Trust-US. Their largest long position is Cal Intl Responsible Index at 6% of the equity book. Cloning the disclosed picks since 2025 would be +12% (+17.2%/yr). That is a simulation of the disclosed long book, not audited returns.
The public view is the crawlable proof. The same sourced dataset is available through REST and MCP for agents, research scripts, and back-office tools.
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/2056510/holdings"
Use Arkolith to show Rossby Financial, LCC's latest holdings, largest changes, and filing provenance.
Following at the filing date actually beat the quarter-end book by 1.5 points over this window.
Growth of $10,000 cloning Rossby Financial, LCC's disclosed long 13F book, rebalanced on each filing date (so it reflects each quarter's actual reporting lag, ~35 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: diversified book
Share of the disclosed book in its largest positions. A higher top-5 share means a more concentrated, higher-conviction portfolio.
34% 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, no cost basis
Other tracked managers holding the same core names as Rossby Financial, LCC
| Manager / fund | Shared names | Their $ in those |
|---|---|---|
| MORGAN STANLEY | 80 / 80 | $564.3B |
| ENVESTNET ASSET MANAGEMENT INC | 80 / 80 | $123.9B |
| COMMONWEALTH EQUITY SERVICES, LLC | 80 / 80 | $21.5B |
| OSAIC HOLDINGS, INC. | 80 / 80 | $20.3B |
| LPL Financial LLC | 79 / 80 | $106.4B |
| Cetera Investment Advisers | 79 / 80 | $29.3B |
| ROYAL BANK OF CANADA | 78 / 80 | $154.9B |
| Kestra Advisory Services, LLC | 78 / 80 | $9.1B |
Ranked by how many of Rossby Financial, LCC's top 80 disclosed names each fund also holds: a cross-fund conviction signal from the latest 13F of every tracked manager.
Bars show each stock's share of the portfolio. Click a row for its position history.
| # | Security | Value | Shares | % Port | Last move | History |
|---|---|---|---|---|---|---|
| 1 | Morgan Stanley ETF Trust CALVE INDEX ETF | $33.6M | 395.2K | 6.1% | ▲+9.6% Added · +35K sh | |
| 2 | Morgan Stanley ETF Trust CALVERT US LARCP | $23.0M | 243.0K | 4.2% | ▲+11% Added · +24K sh | |
| 3 | Ishares TR RUSEL 2500 ETF | $12.5M | 136.4K | 2.3% | ▲+8.1% Added · +10K sh | |
| 4 | Ea Series Trust FREEDOM 100 EM | $12.4M | 170.5K | 2.3% | ▲+3.7% Added · +6K sh | |
| 5 | Schwab Strategic TR US LCAP GR ETF | $11.3M | 332.5K | 2.1% | ▲+77% Added · +145K sh | |
| 6 | Nvidia Corporation COM | $10.2M | 50.7K | 1.9% | ▲+9.4% Added · +4K sh | |
| 7 | Apple Inc COM | $9.7M | 33.6K | 1.8% | ▲+15% Added · +4K sh | |
| 8 | State STR SPDR S&P 500 ETF T TR UNIT | $8.6M | 11.5K | 1.6% | ▼−1.1% Reduced · −132 sh | |
| 9 | Vanguard Index FDS S&P 500 ETF SHS | $8.1M | 11.8K | 1.5% | ▼−3.9% Reduced · −483 sh | |
| 10 | Ishares TR ESG AWR US AGRGT | $7.1M | 148.8K | 1.3% | ▲+25% Added · +30K sh | |
| 11 | Vaneck ETF Trust GREEN BOND ETF | $7.1M | 292.1K | 1.3% | ▲+10% Added · +27K sh | |
| 12 | Vanguard BD Index FDS INTERMED TERM | $6.9M | 90.1K | 1.3% | ▼−3.2% Reduced · −3K sh | |
| 13 | Ishares TR CORE S&P500 ETF | $6.8M | 9.2K | 1.2% | ▲+21% Added · +2K sh | |
| 14 | Microsoft Corp COM | $6.2M | 16.7K | 1.1% | ▲+14% Added · +2K sh | |
| 15 | Vanguard Index FDS GROWTH ETF | $6.0M | 62.5K | 1.1% | ▲+400% Added · +50K sh | |
| 16 | Ishares TR MSCI USA QLT FCT | $5.9M | 27.1K | 1.1% | ▲+0.2% Added · +44 sh | |
| 17 | Vanguard World FD CONSUM STP ETF | $5.7M | 25.1K | 1.0% | ▼−0.8% Reduced · −213 sh | |
| 18 | SPDR Series Trust ST STR P500ETF | $5.5M | 62.2K | 1.0% | ▲+52% Added · +21K sh | |
| 19 | Amazon Com Inc COM | $5.2M | 21.9K | 1.0% | ▲+22% Added · +4K sh | |
| 20 | Schwab Strategic TR FUNDAMENTAL US B | $5.1M | 167.0K | 0.9% | ▼−0.7% Reduced · −1K sh | |
| 21 | Ishares TR CORE S&P MCP ETF | $5.1M | 65.8K | 0.9% | ▲+2.8% Added · +2K sh | |
| 22 | Alphabet Inc CAP STK CL A | $5.0M | 14.0K | 0.9% | ▲+7.3% Added · +957 sh | |
| 23 | SPDR Index SHS FDS ST STR PO EX ETF | $4.5M | 89.8K | 0.8% | ▲+13% Added · +10K sh | |
| 24 | Ishares TR IBOXX HI YD ETF | $4.5M | 55.8K | 0.8% | ▼−0.2% Reduced · −114 sh | |
| 25 | Schwab Strategic TR FUNDAMENTAL INTL | $4.1M | 77.1K | 0.7% | ▲+27% Added · +16K sh | |
| 26 | Nushares ETF TR NUVEEN ESG SMLCP | $4.0M | 77.3K | 0.7% | ▲+2.2% Added · +2K sh | |
| 27 | Alphabet Inc CAP STK CL C | $3.9M | 10.9K | 0.7% | ▼−32% Reduced · −5K sh | |
| 28 | Ea Series Trust ALPHA ARCH 1-3 | $3.8M | 32.1K | 0.7% | ▲+31% Added · +8K sh | |
| 29 | Sprott Asset Management LP PHYSICAL SILVER | $3.7M | 194.2K | 0.7% | ▼−0.9% Reduced · −2K sh | |
| 30 | Ishares Inc CORE MSCI EMKT | $3.5M | 42.1K | 0.6% | ▲+13% Added · +5K sh | |
| 31 | Schwab Strategic TR US LCAP VA ETF | $3.1M | 90.2K | 0.6% | ▲+3.8% Added · +3K sh | |
| 32 | Broadcom Inc COM | $3.0M | 8.0K | 0.6% | ▲+2.2% Added · +170 sh | |
| 33 | Ishares TR CORE MSCI INTL | $3.0M | 33.4K | 0.5% | ▲+5.7% Added · +2K sh | |
| 34 | JPMorgan Chase & Co COM | $3.0M | 9.1K | 0.5% | ▲+31% Added · +2K sh | |
| 35 | Vanguard BD Index FDS TOTAL BND MRKT | $2.9M | 38.9K | 0.5% | ▲+12% Added · +4K sh | |
| 36 | Eli Lilly & Co COM | $2.8M | 2.4K | 0.5% | ▲+46% Added · +749 sh | |
| 37 | Bluerock PVT Real Estate FD COM | $2.8M | 212.1K | 0.5% | ▼−9.7% Reduced · −23K sh | |
| 38 | Vanguard Tax-Managed FDS VAN FTSE DEV MKT | $2.7M | 38.6K | 0.5% | ▲+69% Added · +16K sh | |
| 39 | Vanguard Index FDS VALUE ETF | $2.7M | 12.4K | 0.5% | ▲+34% Added · +3K sh | |
| 40 | Vanguard Whitehall FDS HIGH DIV YLD | $2.6M | 16.2K | 0.5% | ▼−41% Reduced · −11K sh | |
| 41 | J P Morgan Exchange Traded F JPMORGAM LTD DUR | $2.5M | 48.6K | 0.5% | ▲+69% Added · +20K sh | |
| 42 | Schwab Strategic TR INTL EQTY ETF | $2.5M | 90.7K | 0.5% | ▲+13% Added · +11K sh | |
| 43 | Vanguard Index FDS TOTAL STK MKT | $2.5M | 6.8K | 0.5% | ▲+105% Added · +3K sh | |
| 44 | SPDR Series Trust ST BLOO HIGH ETF | $2.5M | 25.7K | 0.5% | ▼−3.0% Reduced · −806 sh | |
| 45 | Meta Platforms Inc CL A | $2.5M | 4.4K | 0.5% | ▲+16% Added · +616 sh | |
| 46 | Morgan Stanley ETF Trust EATON VANCE SHRT | $2.4M | 47.3K | 0.4% | ▲+14% Added · +6K sh | |
| 47 | Vanguard Scottsdale FDS INT-TERM CORP | $2.3M | 27.9K | 0.4% | ▼−27% Reduced · −10K sh | |
| 48 | Micron Technology Inc COM | $2.2M | 1.9K | 0.4% | ▲+5.4% Added · +100 sh | |
| 49 | Ishares TR CORE US AGGBD ET | $2.2M | 22.5K | 0.4% | ▲+26% Added · +5K sh | |
| 50 | Walmart Inc COM | $2.2M | 19.0K | 0.4% | ▲+9.6% Added · +2K sh |
As-of date vs the date the SEC received each filing
Holdings from SEC EDGAR 13F-HR filings, updated quarterly, filed up to 45 days after quarter-end. Public domain. The book and weighting are long equity only; 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.