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CRBU — structural market context

Caribou Biosciences, Inc.

Structural market context from public regulatory and market data, shown with its as-of dates. Descriptive only: nothing on this page is a recommendation, a prediction, or advice to buy or sell any security.

What changed

As of the close on Oct 21. Each line shows the earlier value, the later value and their dates.

Price

Close $0.54 (Oct 21) vs $0.52 (Oct 20): +4.89%.

Volume

0.42× its 20-session average (5.4M) on Oct 21.

Includes pre- and post-market trading.

Short interest

Short interest 12.9M shares (settlement Sep 30) vs 13.0M (Sep 15).

No new publication in this window. Latest: settlement Sep 30, published Oct 10.

Fails-to-deliver

Latest file (settlements Sep 15–Sep 30, published Oct 16): 4 days with fails, largest 39K shares on Sep 22.

Previous file (settlements Sep 1–Sep 14, published Sep 30): 5 days with fails, largest 76K shares on Sep 14.

No new publication in this window.

Analyst rating actions

None recorded in this window.

CRBU events and their magnitude

Latest SEC filing in the event study

No SEC filing for this ticker in the event study yet.

…

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CRBU short interest & days to cover

SHARES SHORT
12.9M
% OF FLOAT
13.2%
DAYS TO COVER
13.1
CHANGE VS PRIOR
-0.5%

FINRA consolidated short interest, reported twice a month and published ~2 weeks after each settlement date. % of float uses reported free float. · as of 2026-09-30 (23d ago)

CRBU fails-to-deliver (FTD)

Settlement dateFailed sharesPrice
2026-09-29 · 24d23K$1.23
2026-09-28 · 25d36K$1.24
2026-09-22 · 31d39K$1.3

SEC fails-to-deliver files, published twice a month with ~6 weeks of delay.

CRBU analyst ratings

FirmActionRatingPublished
H.C. WainwrightdowngradeNeutral (from Buy)2026-10-08
RBC CapitaldowngradeSector Perform (from Buy)2026-10-07
RBC Capitalprice_target—2026-10-07
Leerink Partnersprice_target—2026-10-07

Rating actions as published by the firms, from public feeds. They are not graded here.

Frequently asked questions

What is CRBU's short interest?
As of the FINRA settlement date 2026-09-30, CRBU had 12.9M shares sold short — 13.2% of its float, with 13.1 days to cover at average volume. FINRA publishes this data roughly two weeks after each twice-monthly settlement, so it is inherently delayed. A short-interest figure describes an aggregate position; it does not predict what the stock will do.
What do analysts say about CRBU?
The most recent action: H.C. Wainwright downgrade to Neutral on 2026-10-08. Rating actions are shown as published by the firms; they are not graded here.
Is this page telling me to buy or sell CRBU?
No. Everything on this page is descriptive, structural market context from public data, shown with its as-of dates. TradeAI News does not issue directional recommendations, price predictions, or buy/sell advice — for any ticker.
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CRBU: the full history

Latest rows shown. Full history, market-wide screens, cluster detection and the context journal live in the dashboard.

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Not financial advice. Trading involves risk. Descriptive structural context, never a recommendation.