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PBYI — structural market context

Puma Biotechnology 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 23. Each line shows the earlier value, the later value and their dates.

Price

Close $11.02 (Oct 23) vs $11.26 (Oct 22): −2.13%.

Volume

1.60× its 20-session average (349K) on Oct 23.

Includes pre- and post-market trading.

Short interest

Short interest 4.3M shares (settlement Sep 30) vs 4.3M (Sep 15).

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

Insider filings (Form 4)

None recorded in this window.

PBYI events and their magnitude

Latest SEC filing in the event study

Schedule 13D/A (amendment) · filed 2026-10-06 · View on sec.gov ↗

…

Open the Event Study →

PBYI short interest & days to cover

SHARES SHORT
4.3M
% OF FLOAT
10.6%
DAYS TO COVER
14.0
CHANGE VS PRIOR
-1.3%

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 (24d ago)

PBYI fails-to-deliver (FTD)

Settlement dateFailed sharesPrice
2026-08-17 · 68d692$8.83
2026-06-30 · 116d5K$8.19
2026-06-29 · 117d83$8.11

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

PBYI insider buying and selling (Form 4)

Last 12 months, Form 4 codes P and S: 0 purchases · 2 sales

InsiderTypeSharesValueFiled
WILSON TROY EDWARD · directorSale (S)5K$46K2026-09-16
Cesano Alessandra · directorSale (S)62K$567K2026-09-16

SEC Form 4 filings: purchases and sales reported on Form 4 (transaction codes P and S) only; grants and option exercises excluded. Attributed public records.

Frequently asked questions

What is PBYI's short interest?
As of the FINRA settlement date 2026-09-30, PBYI had 4.3M shares sold short — 10.6% of its float, with 14.0 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.
Are insiders buying PBYI?
In the last 12 months of SEC Form 4 filings, PBYI recorded 0 insider purchases and 2 sales reported on Form 4 (transaction codes P and S; grants and option exercises excluded). These are attributed public records — information, not instruction.
Is this page telling me to buy or sell PBYI?
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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PBYI: 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.