Tower Research Capital LLC (TRC) holds a diversified book of 5081 reported positions worth $3.8B as of Q1 2026 (disclosed May 15, 2026, a ~45-day 13F lag). This quarter Mda Space Ltd first appears in 13F filings (one of 35 new listings in the book), a listing rather than a purchase; they opened Ishares Core U.S. Aggregate and trimmed Apple Inc. Their largest long position is Invesco QQQ Trust Series 1 at 4% of the reported non-option book.
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.
70% mapped to company sectors
+5 sectors below the cut, 12% 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 Tower Research Capital LLC (TRC)
| Manager / fund | Shared names | Their $ in those |
|---|---|---|
| Hoffman, Alan N Investment Management | 9 / 80 | $161.9M |
| Prospect Hill Management, LLC | 10 / 80 | $244.4M |
| Evelyn Partners Group Ltd | 56 / 80 | $44.4B |
| Uhlmann Price Securities, LLC | 46 / 80 | $2.5B |
| Greenbrier Partners Capital Management, LLC | 8 / 80 | $1.2B |
| Conway Capital Management, Inc. | 19 / 80 | $200.6M |
| Draper Asset Management, LLC | 11 / 80 | $176.0M |
| Hoey Investments, Inc | 52 / 80 | $668.1M |
Ranked by the share of each fund's own book sitting in the names it shares with Tower Research Capital LLC (TRC): 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 | Invesco QQQ TR UNIT SER 1 | $139.5M | 241.7K | 3.6% | ▲27k× Added · +242K sh | |
| 2 | Direxion Shares ETF Trust Daily SEMICONDUC | $114.1M | 2.38M | 3.0% | ▲9k× Added · +2.4M sh | |
| 3 | Apple Inc COM | $112.2M | 442.0K | 2.9% | ▼−44% Reduced · −353K sh | |
| 4 | Microsoft Corp COM | $93.6M | 253.0K | 2.4% | ▼−25% Reduced · −86K sh | |
| 5 | Micron Technology Inc COM | $90.9M | 268.9K | 2.4% | ▲+168% Added · +169K sh | |
| 6 | Tesla Inc COM | $69.2M | 186.1K | 1.8% | ▲+10% Added · +17K sh | |
| 7 | Nvidia Corporation COM | $65.6M | 376.4K | 1.7% | ▼−60% Reduced · −568K sh | |
| 8 | Broadcom Inc COM | $55.4M | 179.1K | 1.4% | ▼−29% Reduced · −75K sh | |
| 9 | Alphabet Inc Cap STK CL A | $48.7M | 169.3K | 1.3% | ▼−42% Reduced · −122K sh | |
| 10 | Ishares TR CORE US AGGBD ET | $39.7M | 400.4K | 1.0% | ▲New New position | |
| 11 | State STR SPDR S&P 500 ETF T TR UNIT | $35.2M | 54.1K | 0.9% | ▲79× Added · +53K sh | |
| 12 | Vaneck ETF Trust PHARMACEUTCL ETF | $31.6M | 304.5K | 0.8% | ▲35× Added · +296K sh | |
| 13 | Amazon Com Inc COM | $31.4M | 150.8K | 0.8% | ▼−70% Reduced · −348K sh | |
| 14 | JPMorgan Chase & Co COM | $29.4M | 99.9K | 0.8% | ▲+2.0% Added · +2K sh | |
| 15 | Meta Platforms Inc CL A | $28.1M | 49.2K | 0.7% | ▼−62% Reduced · −79K sh | |
| 16 | Alphabet Inc Cap STK CL C | $26.6M | 92.8K | 0.7% | ▼−68% Reduced · −197K sh | |
| 17 | Walmart Inc COM | $26.1M | 210.3K | 0.7% | ▲+30% Added · +49K sh | |
| 18 | SPDR Series Trust STATE STREET SPD | $25.3M | 755.5K | 0.7% | ▲New New position | |
| 19 | Chevron Corporation COM | $24.2M | 117.1K | 0.6% | ▲+87% Added · +55K sh | |
| 20 | Vodafone Group PLC SPONSORED ADR | $24.2M | 1.61M | 0.6% | ▲+21% Added · +275K sh | |
| 21 | Janus Detroit STR TR HENDRSON AAA CL | $23.8M | 473.4K | 0.6% | ▲New New position | |
| 22 | Shell PLC SPON ADS | $23.3M | 251.1K | 0.6% | ▲+481% Added · +208K sh | |
| 23 | GSK PLC SPONSORED ADR | $20.8M | 376.0K | 0.5% | ▲+64% Added · +147K sh | |
| 24 | Eli Lilly & Co COM | $20.1M | 21.8K | 0.5% | ▲+15% Added · +3K sh | |
| 25 | Costco Wholesale Corporation COM | $19.8M | 19.9K | 0.5% | ▼−42% Reduced · −14K sh | |
| 26 | Exxon Mobil Corp COM | $19.5M | 115.2K | 0.5% | ▲+59% Added · +43K sh | |
| 27 | BP PLC SPONSORED ADR | $19.5M | 414.6K | 0.5% | ▲+32% Added · +100K sh | |
| 28 | Netflix Inc. COM | $17.7M | 184.4K | 0.5% | ▼−43% Reduced · −139K sh | |
| 29 | Berkshire Hathaway Inc Del CL B NEW | $17.3M | 36.0K | 0.4% | ▼−30% Reduced · −15K sh | |
| 30 | Johnson & Johnson COM | $16.5M | 67.4K | 0.4% | ▲+11% Added · +7K sh | |
| 31 | Mastercard Incorporated CL A | $16.0M | 32.0K | 0.4% | ▲+48% Added · +10K sh | |
| 32 | AstraZeneca PLC ORD | $15.9M | 80.8K | 0.4% | ▲New New position | |
| 33 | Diageo PLC SPON ADR NEW | $15.8M | 212.8K | 0.4% | ▲+25% Added · +43K sh | |
| 34 | Sandisk Corp COM | $14.9M | 23.4K | 0.4% | ▲+330% Added · +18K sh | |
| 35 | Linde PLC SHS | $14.9M | 30.0K | 0.4% | ▼−10% Reduced · −3K sh | |
| 36 | Visa Inc COM CL A | $14.3M | 47.2K | 0.4% | ▼−14% Reduced · −8K sh | |
| 37 | Select Sector SPDR TR State Street IND | $13.9M | 85.7K | 0.4% | ▲New New position | |
| 38 | Applied Matls Inc COM | $13.7M | 40.0K | 0.4% | ▼−33% Reduced · −20K sh | |
| 39 | Analog Devices Inc COM | $13.1M | 41.1K | 0.3% | ▲+15% Added · +5K sh | |
| 40 | Ishares TR MSCI USA MIN VOL | $13.0M | 140.6K | 0.3% | ▲+286% Added · +104K sh | |
| 41 | Wisdomtree TR FLOATNG RAT TREA | $13.0M | 258.3K | 0.3% | ▼−60% Reduced · −383K sh | |
| 42 | Home Depot Inc COM | $12.8M | 39.0K | 0.3% | ▼−19% Reduced · −9K sh | |
| 43 | Vaneck ETF Trust OIL SERVICES ETF | $12.6M | 31.2K | 0.3% | ▲+376% Added · +25K sh | |
| 44 | Shopify Inc CL A SUB VTG SHS | $12.5M | 105.7K | 0.3% | ▲+71% Added · +44K sh | |
| 45 | ASML Hldg NV N Y Registry SHS | $12.3M | 9.3K | 0.3% | ▼−41% Reduced · −6K sh | |
| 46 | Palantir Technologies Inc CL A | $12.0M | 82.1K | 0.3% | ▼−52% Reduced · −89K sh | |
| 47 | Ishares TR RUS 2000 VAL ETF | $11.7M | 61.7K | 0.3% | ▲+365% Added · +48K sh | |
| 48 | T-Mobile US Inc COM | $11.3M | 53.8K | 0.3% | ▼~0% Reduced · −9 sh | |
| 49 | Vanguard Specialized Funds Div App ETF | $11.2M | 52.3K | 0.3% | ▲New New position | |
| 50 | Palo Alto Networks Inc COM | $11.0M | 68.6K | 0.3% | ▲+35% Added · +18K 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/1533421/holdings"
Use Arkolith to show Tower Research Capital LLC (TRC)'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 |
|---|---|---|---|---|---|---|
| Q1 2026 | Mar 31, 2026 | May 15, 2026 | 45d | 6,440 | $3.8B | 13F-HR |
| Q4 2025 | Dec 31, 2025 | Feb 17, 2026 | 48d | 6,626 | $4.1B | 13F-HR |
| Q3 2025 | Sep 30, 2025 | Nov 14, 2025 | 45d | 7,635 | $3.6B | 13F-HR |
| Q2 2025 | Jun 30, 2025 | Aug 15, 2025 | 46d | 7,722 | $3.7B | 13F-HR |
| Q1 2025 | Mar 31, 2025 | May 15, 2025 | 45d | 7,604 | $3.4B | 13F-HR |
| Q4 2024 | Dec 31, 2024 | Feb 13, 2025 | 44d | 9,043 | $5.0B | 13F-HR |
| Q3 2024 | Sep 30, 2024 | Nov 14, 2024 | 45d | 8,770 | $3.8B | 13F-HR |
| Q2 2024 | Jun 30, 2024 | Aug 13, 2024 | 44d | 8,333 | $5.9B | 13F-HR |
| Q1 2024 | Mar 31, 2024 | May 15, 2024 | 45d | 8,675 | $4.2B | 13F-HR |
| Q4 2023 | Dec 31, 2023 | Feb 13, 2024 | 44d | 9,605 | $8.1B | 13F-HR |
| Q3 2023 | Sep 30, 2023 | Nov 14, 2023 | 45d | 9,639 | $3.2B | 13F-HR |
| Q2 2023 | Jun 30, 2023 | Aug 14, 2023 | 45d | 9,702 | $3.0B | 13F-HR |
| Q1 2023 | Mar 31, 2023 | May 9, 2023 | 39d | 8,994 | $3.1B | 13F-HR |
| Q4 2022 | Dec 31, 2022 | Feb 10, 2023 | 41d | 9,747 | $2.4B | 13F-HR |
| Q3 2022 | Sep 30, 2022 | Nov 10, 2022 | 41d | 9,869 | $6.2B | 13F-HR |
| Q2 2022 | Jun 30, 2022 | Aug 15, 2022 | 46d | 9,337 | $4.5B | 13F-HR |
| Q1 2022 | Mar 31, 2022 | May 12, 2022 | 42d | 9,397 | $10.5B | 13F-HR |
| Q4 2021 | Dec 31, 2021 | Feb 14, 2022 | 45d | 9,540 | $5.8B | 13F-HR |
| Q3 2021 | Sep 30, 2021 | Nov 15, 2021 | 46d | 9,132 | $3.9B | 13F-HR |
| Q2 2021 | Jun 30, 2021 | Aug 16, 2021 | 47d | 8,538 | $3.8B | 13F-HR |
| Q1 2021 | Mar 31, 2021 | May 17, 2021 | 47d | 8,509 | $5.9B | 13F-HR |
| Q4 2020 | Dec 31, 2020 | Feb 16, 2021 | 47d | 8,157 | $3.3B | 13F-HR |
| Q3 2020 | Sep 30, 2020 | Nov 16, 2020 | 47d | 7,398 | $9.0B | 13F-HR |
| Q2 2020 | Jun 30, 2020 | Aug 13, 2020 | 44d | 6,981 | $2.4B | 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. Price-derived performance is withheld until the price-source policy and freshness gate are green.