16 tracked 13F filers disclose a position in TSLR as of the latest SEC 13F filings, a combined $5.5M in reported value. Holders and values reflect the 13F filers Arkolith currently tracks, not the entire institutional universe. Counts and totals are a floor, not the full institutional ownership.
| # | Fund | Position value | Shares | Last move | As of | History |
|---|---|---|---|---|---|---|
| 1 | JANE STREET GROUP, LLC | $1.3M | 61K | ▼−98% Reduced · −2.9M sh | Q1 2026 | |
| 2 | Optiver Holding B.V. | $1.2M | 58K | ▲+150% Added · +35K sh | Q1 2026 | |
| 3 | UBS Group AG | $827K | 40K | ▲108× Added · +40K sh | Q1 2026 | |
| 4 | IMC-Chicago, LLC | $408K | 20K | ▲New +20K sh | Q1 2026 | |
| 5 | Secure Asset Management, LLC | $421K | 17K | ▲+5.3% Added · +872 sh | Q2 2026 | |
| 6 | Jump Financial, LLC | $318K | 15K | ▲New +15K sh | Q1 2026 | |
| 7 | StoneX Group Inc. | $251K | 12K | ▲New +12K sh | Q1 2026 | |
| 8 | SUSQUEHANNA INTERNATIONAL GROUP, LLP | $225K | 11K | ▼−90% Reduced · −104K sh | Q1 2026 | |
| 9 | CITADEL ADVISORS LLC | $225K | 11K | ▼−30% Reduced · −5K sh | Q1 2026 | |
| 10 | TRUE Private Wealth Advisors | $229K | 9K | ▲New +9K sh | Q2 2026 | |
| 11 | SBI Securities Co., Ltd. | $80K | 3K | ▲11× Added · +3K sh | Q2 2026 | |
| 12 | HOLLENCREST CAPITAL MANAGEMENT | $31K | 2K | —Held | Q1 2026 | |
| 13 | Tower Research Capital LLC (TRC) | $5K | 264 | ▲+252% Added · +189 sh | Q1 2026 | |
| 14 | OSAIC HOLDINGS, INC. | $1K | 60 | —Held | Q1 2026 | |
| 15 | SIMPLEX TRADING, LLC | $124 | 6 | ▼−100% Reduced · −28K sh | Q1 2026 | |
| 16 | CITIGROUP INC | $83 | 4 | ▲New +4 sh | Q1 2026 |
Holders and values reflect the 13F filers Arkolith currently tracks, not the entire institutional universe. Counts and totals are a floor, not the full institutional ownership.
Last quarter, 2 funds opened a new position in TSLR and 3 added to an existing one, while 1 reduced and 0 exited entirely — based on 13F filings from active, signal-eligible managers (passive index funds and other mechanical holders are excluded from this count).
| Company | Co-held by | Combined value |
|---|---|---|
| AMAZON.COM INCAMZN | 4 funds | $1.8B |
| MICRON TECHNOLOGY INCMU | 4 funds | $1.6B |
| TAIWAN SEMICONDUCTOR-SP ADRTSM | 4 funds | $1.4B |
| MICROSOFT CORPMSFT | 4 funds | $1.1B |
| META PLATFORMS INC-CLASS AMETA | 4 funds | $1.1B |
| BROADCOM INCAVGO | 4 funds | $1.0B |
| ALPHABET INC-CL AGOOGL | 4 funds | $924.0M |
| TESLA INCTSLA | 4 funds | $884.7M |
| NORFOLK SOUTHERN CORPNSC | 4 funds | $752.5M |
| JPMORGAN CHASE & COJPM | 4 funds | $740.6M |
| BLACKROCK INCBLK | 4 funds | $681.0M |
| INTUITIVE SURGICAL INCISRG | 4 funds | $629.5M |
Ranked by how many of TSLR's institutional holders also hold each name, a cross-fund conviction signal.
No filings captured for this ticker in the live stream yet.
This ETF page is the public Follow view. For one current, evidence-backed answer, use capital_change_brief through REST or MCP. It compares tracked 13F changes with qualifying Form 4 activity and cites the SEC evidence.
curl -H "Authorization: Bearer YOUR_API_KEY" \ "https://arkolith.com/api/v1/stocks/TSLR/capital-change-brief"
Use Arkolith's capital_change_brief for TSLR. Tell me what changed, whether insider activity corroborates it, and cite the SEC evidence.
13F holdings + quarter-over-quarter ownership changes + end-of-day price history + the live filing stream, joined for TSLR. Filings are public domain, sourced to SEC EDGAR; price series derived from end-of-day closes.