NASDAQ · MBX
MBX Biosciences, Inc.
Smart money pulse
What insiders and funds are doing
- account_balance96 funds bought, 63 sold in the quarter ended Jun 30, 2026. 41 were new holders.
- info1 real insider sale in 12 months. $20.1K in total, not counting planned sales.
Pulse runs from −100 (everyone selling) to +100 (everyone buying). Half comes from insiders: real buyers vs. real sellers in the last 90 days (Form 4). Half comes from funds: funds that bought vs. funds that sold last quarter (13F). 13F is a snapshot of long positions on the last day of the quarter, filed up to 45 days later. It does not show short positions or trades since then. This is data, not advice.
Who owns it
174 funds report owning MBX , up from 156
Last quarter
Who bought and who sold
Change in shares held, biggest funds first. Bars stop at ±100%.
Insider trades · last 12 months
Real buys and sales
Showing 1 real trades. Bigger dot means a bigger trade.
Showing every filing. Dashed circles are routine: grants, tax withholding, option exercises and planned sales.
Top holders
Biggest funds in MBX
| Fund | Owns | Value | Change |
|---|---|---|---|
| Frazier Life Sciences Management, L.P. | — | $367M | +0% |
| Fmr LLC | — | $294M | +81% |
| Wellington Management Group Llp | — | $275M | +56% |
| NEA Management Company, LLC | — | $200M | +0% |
| Orbimed Advisors LLC | — | $189M | −6% |
"Owns" is shares reported divided by shares outstanding.