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2026-09-21 · official close

ASSEMBLY BIOSCIENCES INC (ASMB) and the market

Exact index points ASMB contributed this session, under each index's own arithmetic, verified against official closes. New here? Read point contribution, explained.

How much did ASMB move each index today?

XBI: ASMB moved +1.88% and contributed +0.00 points of the index's +1.49-point move (0% of it), ranking #79 of 157 members by contribution to the move.

ASMB in the XBI beyond today

windowASMB returnpoints contributedindex moverank
1 week−12.15%−0.02 pts+0.61 pts#103 of 157
1 month−24.13%−0.05 pts−5.17 pts#65 of 157
quarter to date−5.99%−0.02 pts−0.04 pts#84 of 157
year to date−5.99%−0.02 pts+36.28 pts#97 of 157

Who moved with and against ASMB today?

On ASMB's side of the XBI tape: GRAL (+0.35 pts), MRNA (+0.32 pts), CGON (+0.09 pts). Pulling the other way: SMMT (−0.06 pts), PURR (−0.06 pts), RLAY (−0.06 pts).

Every member's contribution, top to bottom, is on the index dashboards; the day's story is in the market-close note. Machine-readable figures for this stock: /api/stock/ASMB, free to cite with attribution.

Compiled by the WMTMT attribution engine · updates every session · methodology