47 tracked 13F filers disclose a position in SERA as of the latest SEC 13F filings, a combined $33.4M 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 | BAKER BROS. ADVISORS LP | $11.2M | 5.5M | —Held | Q1 2026 | |
| 2 | Whetstone Capital Advisors, LLC | $6.7M | 3.3M | ▼−4.4% Reduced · −153K sh | Q1 2026 | |
| 3 | Aberdeen Group plc | $5.2M | 2.6M | ▲+12% Added · +271K sh | Q1 2026 | |
| 4 | Vivo Capital, LLC | $3.4M | 1.7M | —Held | Q1 2026 | |
| 5 | VANGUARD CAPITAL MANAGEMENT LLC | $2.4M | 1.2M | →First observed position No prior filed position | Q1 2026 | |
| 6 | GEODE CAPITAL MANAGEMENT, LLC | $739K | 364K | ▲+8.7% Added · +29K sh | Q1 2026 | |
| 7 | CITADEL ADVISORS LLC | $505K | 249K | ▼−65% Reduced · −459K sh | Q1 2026 | |
| 8 | AWM Investment Company, Inc. | $421K | 207K | —Held | Q1 2026 | |
| 9 | BlackRock, Inc. | $398K | 196K | ▲+5.0% Added · +9K sh | Q1 2026 | |
| 10 | VANGUARD FIDUCIARY TRUST CO | $344K | 170K | →First observed position No prior filed position | Q1 2026 | |
| 11 | STATE STREET CORP | $253K | 125K | —Held | Q1 2026 | |
| 12 | MORGAN STANLEY | $213K | 105K | ▲+30% Added · +24K sh | Q1 2026 | |
| 13 | NORTHERN TRUST CORP | $196K | 97K | —Held | Q1 2026 | |
| 14 | MILLENNIUM MANAGEMENT LLC | $186K | 92K | ▼−19% Reduced · −22K sh | Q1 2026 | |
| 15 | Perigon Wealth Management, LLC | $148K | 73K | —Held | Q1 2026 | |
| 16 | Bank of New York Mellon Corp | $124K | 61K | ▼−19% Reduced · −14K sh | Q1 2026 | |
| 17 | JANE STREET GROUP, LLC | $109K | 54K | ▼−22% Reduced · −15K sh | Q1 2026 | |
| 18 | Ballentine Partners, LLC | $90K | 50K | —Held | Q2 2026 | |
| 19 | BRIDGEWAY CAPITAL MANAGEMENT, LLC | $93K | 46K | —Held | Q1 2026 | |
| 20 | HighTower Advisors, LLC | $86K | 42K | —Held | Q1 2026 | |
| 21 | BARCLAYS PLC | $65K | 32K | ▼−13% Reduced · −5K sh | Q1 2026 | |
| 22 | Squarepoint Ops LLC | $64K | 31K | ▼−13% Reduced · −5K sh | Q1 2026 | |
| 23 | Birch Hill Investment Advisors LLC | $50K | 27K | —Held | Q2 2026 | |
| 24 | Cetera Investment Advisers | $51K | 25K | —Held | Q1 2026 | |
| 25 | TWO SIGMA INVESTMENTS, LP | $45K | 22K | —Held | 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, 3 funds opened a new position in SERA and 1 added to an existing one, while 6 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 | 15 funds | $8.1B |
| ALPHABET INC-CL AGOOGL | 15 funds | $7.1B |
| NVIDIA CORPNVDA | 14 funds | $13.7B |
| APPLE INCAAPL | 14 funds | $12.0B |
| MICROSOFT CORPMSFT | 14 funds | $8.9B |
| BROADCOM INCAVGO | 14 funds | $5.2B |
| TESLA INCTSLA | 14 funds | $5.2B |
| META PLATFORMS INC-CLASS AMETA | 14 funds | $4.8B |
| ALPHABET INC-CL CGOOG | 14 funds | $4.7B |
| JPMORGAN CHASE & COJPM | 14 funds | $4.0B |
| BERKSHIRE HATHAWAY INC-CL BBRK/B | 14 funds | $2.6B |
| COSTCO WHOLESALE CORPCOST | 14 funds | $2.5B |
Ranked by how many of SERA's institutional holders also hold each name, a cross-fund conviction signal.
| Date | Insider | Role | Action | Shares | Value |
|---|---|---|---|---|---|
| Jun 11, 2026 | Anderson Dyaarl Lee Jr. | Chief Commercial Officer | Sell (S) | 5K | $10K |
| Jun 11, 2026 | Aerts Austin | Chief Financial Officer | Sell (S) | 2K | $4K |
| Jun 11, 2026 | Lindgardt Zhenya | Chief Executive Officer, Director | Sell (S) | 7K | $14K |
| Jun 11, 2026 | Inglis Tiffany Eul Davis | Chief Medical Officer | Sell (S) | 362 | $728 |
| Jun 11, 2026 | Jackson Benjamin | General Counsel | Sell (S) | 2K | $4K |
| Jun 9, 2026 | Aerts Austin | Chief Financial Officer | Sell (S) | 5K | $11K |
| Jun 9, 2026 | Lindgardt Zhenya | Chief Executive Officer, Director | Sell (S) | 21K | $43K |
| Jun 8, 2026 | Lawrence Sandra AJ | Director | Sell (S) | 2K | $3K |
| Mar 11, 2026 | Aerts Austin | Chief Financial Officer | Sell (S) | 1K | $2K |
| Mar 11, 2026 | Boniface John J. | Chief Scientific Officer | Sell (S) | 2K | $3K |
| Mar 11, 2026 | Harrison Robert Gardner | Chief Information Officer | Sell (S) | 716 | $1K |
| Mar 11, 2026 | Jackson Benjamin | General Counsel | Sell (S) | 1K | $2K |
Connected entities for SERA
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/SERA/capital-change-brief"
Use Arkolith's capital_change_brief for SERA. 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 SERA. Filings are public domain, sourced to SEC EDGAR; price series derived from end-of-day closes.