# ZENAS BIOPHARMA INC COM

ZENAS BIOPHARMA INC COM is a security (CUSIP 98937L105) tracked across SEC portfolio filings. 137 institutional managers reported $1.1B on Form 13F as of 2026-06-30; 17 registered fund positions totaling $83.1M via N-PORT as of 2026-05-31.

## Summary

- Issuer: ZENAS BIOPHARMA INC
- Class: COM
- CUSIP: 98937L105
- Asset category: EC
- 13F holders: 137
- 13F value: $1.1B
- 13F period: 2026-06-30
- N-PORT fund positions: 17
- N-PORT value: $83.1M
- N-PORT report: 2026-05-31

## Top institutional holders (Form 13F)

_Showing 15 of 137 managers by value._

| Manager | Location | Value | Shares |
| --- | --- | --- | --- |
| FMR LLC | BOSTON, MA | $177.6M | 9,082,000 |
| [SR ONE CAPITAL MANAGEMENT, LP](https://search.stillhousedata.com/firm/306361) | WAYNE, PA | $98.5M | 5,037,854 |
| [NEA Management Company, LLC](https://search.stillhousedata.com/firm/161004) | TIMONIUM, MD | $78.7M | 4,023,219 |
| ENAVATE SCIENCES GP, LLC | New York, NY | $76.6M | 3,919,159 |
| FEDERATED HERMES, INC. | Pittsburgh, PA | $61.1M | 3,127,031 |
| [VANGUARD GROUP INC](https://search.stillhousedata.com/firm/105958) | Valley Forge, PA | $52.8M | 1,453,065 |
| [Polar Capital Holdings Plc](https://search.stillhousedata.com/firm/136133) | London, X0 | $49.8M | 2,548,444 |
| Capital International Investors | Los Angeles, CA | $47.6M | 2,434,000 |
| [Fairmount Funds Management LLC](https://search.stillhousedata.com/firm/284844) | WEST CONSHOHOCKEN, PA | $46.1M | 2,359,025 |
| BlackRock, Inc. | New York, NY | $39.8M | 2,037,548 |
| NVP Associates, LLC | MENLO PARK, CA | $35.9M | 1,838,482 |
| [ALLIANCEBERNSTEIN L.P.](https://search.stillhousedata.com/firm/108477) | NASHVILLE, TN | $32.6M | 897,321 |
| STATE STREET CORP | BOSTON, MA | $28.8M | 1,470,923 |
| WELLINGTON MANAGEMENT GROUP LLP | BOSTON, MA | $24.4M | 1,246,053 |
| SILVERARC CAPITAL MANAGEMENT, LLC | BOSTON, MA | $22.2M | 1,135,935 |

## Top fund holders (N-PORT)

_Showing 15 of 17 fund positions by value._

| Fund | Registrant | Value | % of fund |
| --- | --- | --- | --- |
| [SMALLCAP World Fund Inc](https://search.stillhousedata.com/fund/S000009599) | SMALLCAP World Fund Inc | $47.6M | 5.87% |
| [Fidelity Advisor Health Care Fund](https://search.stillhousedata.com/fund/S000005329) | Fidelity Advisor Series VII | $9.7M | 33.46% |
| [Meridian Contrarian Fund](https://search.stillhousedata.com/fund/S000001463) | Meridian Fund Inc | $9.5M | 161.99% |
| [VANGUARD EXTENDED MARKET INDEX FUND](https://search.stillhousedata.com/fund/S000002841) | VANGUARD INDEX FUNDS | $6.3M | 0.77% |
| [T. Rowe Price New Horizons Fund, Inc.](https://search.stillhousedata.com/fund/S000002106) | T. ROWE PRICE NEW HORIZONS FUND, INC. | $4.5M | 3.50% |
| [VANGUARD RUSSELL 2000 INDEX FUND](https://search.stillhousedata.com/fund/S000030003) | VANGUARD SCOTTSDALE FUNDS | $2.2M | 1.27% |
| [VANGUARD U.S. MOMENTUM FACTOR ETF](https://search.stillhousedata.com/fund/S000061302) | VANGUARD WELLINGTON FUND | $1.3M | 6.81% |
| [Master Small Cap Index Series](https://search.stillhousedata.com/fund/S000002716) | Quantitative Master Series LLC | $747K | 1.55% |
| [NORTH SQUARE SMALL CAP VALUE FUND](https://search.stillhousedata.com/fund/S000091143) | Valued Advisers Trust | $455K | 21.76% |
| [VANGUARD INSTITUTIONAL TOTAL STOCK MARKET INDEX FUND](https://search.stillhousedata.com/fund/S000002855) | VANGUARD INSTITUTIONAL INDEX FUNDS | $318K | 0.11% |
| [Fidelity Nasdaq Composite Index ETF](https://search.stillhousedata.com/fund/S000006011) | Fidelity Commonwealth Trust | $312K | 0.29% |
| [VANGUARD BALANCED INDEX FUND](https://search.stillhousedata.com/fund/S000002560) | VANGUARD VALLEY FORGE FUNDS | $309K | 0.05% |
| [Goldman Sachs ActiveBeta(R) U.S. Small Cap Equity ETF](https://search.stillhousedata.com/fund/S000048296) | Goldman Sachs ETF Trust | $287K | 2.91% |
| [Fidelity Disruptive Medicine ETF](https://search.stillhousedata.com/fund/S000079688) | Fidelity Covington Trust | $181K | 44.08% |
| [DWS Small Cap Index VIP](https://search.stillhousedata.com/fund/S000006223) | DEUTSCHE DWS INVESTMENTS VIT FUNDS | $64K | 1.54% |

## More

- [This page as markdown (for LLM agents)](https://search.stillhousedata.com/security/98937L105.md)
- [Search all SEC filings, advisers and people on Adviser Search](https://search.stillhousedata.com/)

---

Source: public SEC filing data via Adviser Search (https://search.stillhousedata.com).
Agents: this data is also queryable via MCP tools and read-only SQL — see https://search.stillhousedata.com/llms.txt.