322 tracked 13F filers disclose a position in SIMO as of the latest SEC 13F filings, a combined $3.4B 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 | FMR LLC | $381.6M | 3.4M | —Held | Q1 2026 | |
| 2 | REINHART PARTNERS, LLC. | $147.6M | 1.3M | ▼−16% Reduced · −259K sh | Q1 2026 | |
| 3 | HAWK RIDGE CAPITAL MANAGEMENT LP | $131.8M | 1.2M | ▲+49% Added · +386K sh | Q1 2026 | |
| 4 | Polar Capital Holdings Plc | $310.5M | 931K | ▲New +931K sh | Q2 2026 | |
| 5 | LAZARD ASSET MANAGEMENT LLC | $87.8M | 782K | ▲+3.1% Added · +23K sh | Q1 2026 | |
| 6 | Robeco Institutional Asset Management B.V. | $70.9M | 632K | ▲+1.2% Added · +8K sh | Q1 2026 | |
| 7 | Analog Century Management LP | $60.5M | 539K | ▲New +539K sh | Q1 2026 | |
| 8 | SYSTEMATIC FINANCIAL MANAGEMENT LP | $56.9M | 507K | ▼−13% Reduced · −76K sh | Q1 2026 | |
| 9 | ARROWSTREET CAPITAL, LIMITED PARTNERSHIP | $47.8M | 426K | ▲+112% Added · +225K sh | Q1 2026 | |
| 10 | MILLENNIUM MANAGEMENT LLC | $44.4M | 396K | ▲+169% Added · +249K sh | Q1 2026 | |
| 11 | UBS Group AG | $44.0M | 392K | ▲+11% Added · +40K sh | Q1 2026 | |
| 12 | VOYA INVESTMENT MANAGEMENT LLC | $42.9M | 382K | ▲New +382K sh | Q1 2026 | |
| 13 | Qube Research & Technologies Ltd | $39.5M | 352K | ▲+269% Added · +256K sh | Q1 2026 | |
| 14 | CastleKnight Management LP | $36.3M | 323K | ▲+293% Added · +241K sh | Q1 2026 | |
| 15 | OBERWEIS ASSET MANAGEMENT INC/ | $31.7M | 283K | ▲+20% Added · +46K sh | Q1 2026 | |
| 16 | MARSHALL WACE, LLP | $31.1M | 277K | ▲+109% Added · +144K sh | Q1 2026 | |
| 17 | TWO SIGMA INVESTMENTS, LP | $30.8M | 275K | ▼−28% Reduced · −105K sh | Q1 2026 | |
| 18 | Boston Partners | $30.6M | 273K | ▼−29% Reduced · −111K sh | Q1 2026 | |
| 19 | SCHWARTZ INVESTMENT COUNSEL INC | $90.0M | 270K | ▼−10% Reduced · −30K sh | Q2 2026 | |
| 20 | SUMMIT PARTNERS PUBLIC ASSET MANAGEMENT, LLC | $87.3M | 262K | ▼−43% Reduced · −195K sh | Q2 2026 | |
| 21 | APIS CAPITAL ADVISORS, LLC | $28.0M | 249K | ▲+16% Added · +35K sh | Q1 2026 | |
| 22 | BANK OF AMERICA CORP /DE/ | $27.4M | 244K | ▲+33% Added · +61K sh | Q1 2026 | |
| 23 | MORGAN STANLEY | $23.7M | 211K | ▼−20% Reduced · −54K sh | Q1 2026 | |
| 24 | MASSACHUSETTS FINANCIAL SERVICES CO /MA/ | $23.8M | 210K | ▲+1.7% Added · +4K sh | Q1 2026 | |
| 25 | Russell Investments Group, Ltd. | $22.3M | 203K | ▲+2.3% Added · +5K 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, 24 funds opened a new position in SIMO and 20 added to an existing one, while 27 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 |
|---|---|---|
| NVIDIA CORPNVDA | 186 funds | $145.2B |
| MICROSOFT CORPMSFT | 185 funds | $100.1B |
| AMAZON.COM INCAMZN | 182 funds | $77.9B |
| META PLATFORMS INC-CLASS AMETA | 177 funds | $42.2B |
| ALPHABET INC-CL AGOOGL | 173 funds | $72.1B |
| MICRON TECHNOLOGY INCMU | 173 funds | $20.3B |
| APPLE INCAAPL | 170 funds | $105.8B |
| BROADCOM INCAVGO | 166 funds | $52.6B |
| JPMORGAN CHASE & COJPM | 165 funds | $29.6B |
| VISA INC-CLASS A SHARESV | 165 funds | $23.8B |
| TAIWAN SEMICONDUCTOR-SP ADRTSM | 165 funds | $22.8B |
| ADVANCED MICRO DEVICESAMD | 165 funds | $15.5B |
Ranked by how many of SIMO's institutional holders also hold each name, a cross-fund conviction signal.
| Date | Insider | Role | Action | Shares | Value |
|---|---|---|---|---|---|
| Jun 18, 2026 | SHIEH HAN-PING | Director | Sell (S) | 1K | $328K |
| Jun 18, 2026 | LIN KUAN-MING | Director | Sell (S) | 1K | $320K |
| Jun 17, 2026 | LIN KUAN-MING | Director | Sell (S) | 1K | $300K |
| Jun 17, 2026 | LIN KUAN-MING | Director | Sell (S) | 1K | $310K |
| Jun 2, 2026 | SHIEH HAN-PING | Director | Sell (S) | 1K | $301K |
| May 6, 2026 | DUANN SHII TYNG | Director | Sell (S) | 2K | $368K |
Connected entities for SIMO
This stock 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/SIMO/capital-change-brief"
Use Arkolith's capital_change_brief for SIMO. Tell me what changed, whether insider activity corroborates it, and cite the SEC evidence.
13F holdings + Form 4 insider transactions + end-of-day price history + the live filing stream, joined for SIMO. Filings are public domain, sourced to SEC EDGAR; price series derived from end-of-day closes.