4D Advisors, LLC holds a diversified book of 37 reported positions worth $260.3M as of Q2 2026 (disclosed Aug 14, 2026, a ~45-day 13F lag). This quarter they opened Arcbest Corp and trimmed Cohu Inc. Their largest long position is Knight-Swift Transportation at 6% of the reported non-option book. Cloning the disclosed picks since 2025 would be +27% (+16.2%/yr). That is a simulation of the disclosed long book, not audited returns.
The reported book (valued from quarter-end) returned +38.4%, a 11.9-point gap that is the cost of the ~45-day 13F disclosure lag a real follower can't avoid.
Growth of $10,000 cloning 4D Advisors, LLC's disclosed long 13F book, rebalanced on each filing date (so it reflects each quarter's actual reporting lag, ~45 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.
100% mapped to company sectors
+1 sector below the cut, under 0.5% 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.
Estimated $ traded · quarter-end prices (an exit at the prior quarter-end), no cost basis
Other tracked managers holding the same core names as 4D Advisors, LLC
| Manager / fund | Shared names | Their $ in those |
|---|---|---|
| Private Capital Advisors, Inc. | 3 / 37 | $522.8M |
| Pingora Partners LLC | 3 / 37 | $55.7M |
| Goelzer Investment Management, Inc. | 3 / 37 | $646.1M |
| O'Neil Global Advisors, Inc. | 5 / 37 | $121.9M |
| Cascade Financial Partners, LLC | 3 / 37 | $285.4M |
| Sapient Capital LLC | 3 / 37 | $1.8B |
| Rakuten Securities, Inc. | 18 / 37 | $101.4M |
| Oakum Bay Capital LLC | 3 / 37 | $43.9M |
Ranked by the share of each fund's own book sitting in the names it shares with 4D Advisors, LLC: 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 | Knight-Swift Transn Hldgs In CL A | $15.6M | 200.0K | 6.0% | ▲+208% Added · +135K sh | |
| 2 | Hunt J B Trans Svcs Inc COM | $12.7M | 44.0K | 4.9% | ▲+10% Added · +4K sh | |
| 3 | Arcbest Corp COM | $12.2M | 85.0K | 4.7% | ▲New New position | |
| 4 | Axon Enterprise Inc COM | $11.2M | 20.0K | 4.3% | ▲+100% Added · +10K sh | |
| 5 | Clean Harbors Inc COM | $10.5M | 35.0K | 4.0% | ▲New New position | |
| 6 | Tfi International Inc COM | $10.0M | 70.0K | 3.9% | ▲New New position | |
| 7 | Covenant Logistics Group Inc CL A | $9.9M | 225.0K | 3.8% | ▲+67% Added · +90K sh | |
| 8 | Eli Lilly & Co COM | $9.0M | 7.5K | 3.5% | ▲New New position | |
| 9 | Floor & Decor Hldgs Inc CL A | $8.9M | 150.0K | 3.4% | ▲New New position | |
| 10 | American Pub Ed Inc COM | $8.9M | 165.0K | 3.4% | ▲+10% Added · +15K sh | |
| 11 | Cohu Inc COM | $8.5M | 115.0K | 3.3% | ▼−38% Reduced · −70K sh | |
| 12 | Federal Signal Corp COM | $8.4M | 65.0K | 3.2% | ▲+30% Added · +15K sh | |
| 13 | Casella Waste Sys Inc CL A | $8.2M | 85.0K | 3.2% | ▲+31% Added · +20K sh | |
| 14 | Advanced Energy Inds COM | $7.5M | 20.0K | 2.9% | ▲+33% Added · +5K sh | |
| 15 | Ftai Aviation Ltd SHS | $7.4M | 27.5K | 2.9% | ▲New New position | |
| 16 | Veeva Sys Inc CL A COM | $7.1M | 40.0K | 2.7% | ▲New New position | |
| 17 | Seadrill Ltd COM | $7.0M | 185.0K | 2.7% | ▲New New position | |
| 18 | Republic Svcs Inc COM | $6.9M | 32.5K | 2.7% | ▲New New position | |
| 19 | Myr Group Inc COM | $6.3M | 12.5K | 2.4% | ▼−17% Reduced · −3K sh | |
| 20 | Guidewire Software Inc COM | $6.2M | 50.0K | 2.4% | ▲New New position | |
| 21 | Canadian Nat Res Ltd Med Ter COM | $5.9M | 150.0K | 2.3% | ▲New New position | |
| 22 | Caci Intl Inc CL A | $5.8M | 12.5K | 2.2% | ▲+127% Added · +7K sh | |
| 23 | Align Technology Inc COM | $5.6M | 33.0K | 2.1% | ▲New New position | |
| 24 | Ranger Energy Svcs Inc COM CL A | $5.2M | 325.0K | 2.0% | ▲New New position | |
| 25 | Landstar Sys Inc COM | $5.2M | 25.0K | 2.0% | ▲New New position | |
| 26 | A10 Networks Inc COM | $5.0M | 135.0K | 1.9% | ▲New New position | |
| 27 | Boot Barn Hldgs Inc COM | $4.9M | 30.0K | 1.9% | ▲+50% Added · +10K sh | |
| 28 | Onto Innovation Inc COM | $4.9M | 13.0K | 1.9% | ▼−57% Reduced · −17K sh | |
| 29 | MKS Inc. COM | $4.9M | 11.0K | 1.9% | ▲New New position | |
| 30 | Diamondback Energy Inc COM | $4.4M | 25.0K | 1.7% | ▲18× Added · +24K sh | |
| 31 | Monolithic PWR Sys Inc COM | $4.1M | 3.0K | 1.6% | ▼−25% Reduced · −1K sh | |
| 32 | Micron Technology Inc COM | $4.0M | 3.5K | 1.6% | ▲New New position | |
| 33 | Comfort Sys USA Inc COM | $4.0M | 2.0K | 1.5% | ▼−50% Reduced · −2K sh | |
| 34 | Turning PT Brands Inc COM | $3.8M | 45.0K | 1.5% | ▼−31% Reduced · −20K sh | |
| 35 | Veeco Instrs Inc Del COM | $3.8M | 50.0K | 1.5% | ▲New New position | |
| 36 | Ichor Holdings SHS | $3.4M | 30.0K | 1.3% | ▼−70% Reduced · −70K sh | |
| 37 | Kulicke & Soffa Inds Inc COM | $3.0M | 22.5K | 1.2% | ▼−63% Reduced · −38K sh |
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/1938268/holdings"
Use Arkolith to show 4D Advisors, LLC's latest holdings, largest changes, and filing provenance.
As-of date vs the date the SEC received each filing
Reported 13F total per quarter. Raw filing totals can include option notional.
| Quarter | As of | Filed | Lag | Positions | Value | Form |
|---|---|---|---|---|---|---|
| Q2 2026 | Jun 30, 2026 | Aug 14, 2026 | 45d | 37 | $260.3M | 13F-HR |
| Q1 2026 | Mar 31, 2026 | May 15, 2026 | 45d | 34 | $157.8M | 13F-HR |
| Q4 2025 | Dec 31, 2025 | Feb 17, 2026 | 48d | 37 | $182.5M | 13F-HR |
| Q3 2025 | Sep 30, 2025 | Nov 14, 2025 | 45d | 33 | $187.8M | 13F-HR |
| Q2 2025 | Jun 30, 2025 | Aug 14, 2025 | 45d | 34 | $186.0M | 13F-HR |
| Q1 2025 | Mar 31, 2025 | May 15, 2025 | 45d | 32 | $128.7M | 13F-HR |
| Q4 2024 | Dec 31, 2024 | Feb 14, 2025 | 45d | 35 | $143.5M | 13F-HR |
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.