Informed Accumulation · Case Study

KPTI

2018-04-27WATCH

Positive selinexor Phase-2b → accelerated NDA.

Price, rebased to 100 at the signalChart shows raw price · +31% forward high
100Signal fired+31%
Before the signal After the signal Signal fired
Signal
IAS 26.2
Alert tier
WATCH
Spot at flag
$15
20-day outcome
20-day idiosyncratic +29%
Flow signature

🐋 block-led. This describes the shape of the order flow — how the accumulation was assembled — not its intent and not its likely outcome.

What happened

Accumulation ahead of a binary readout that came in POSITIVE — the name ripped higher, proving IAS is a magnitude, not a direction, signal.

The catalyst: Positive selinexor Phase-2b → accelerated NDA.

The outcome: 20-day idiosyncratic +29% — a forward idiosyncratic move (beta-stripped vs SPY) over a mature 20-day window. The raw price shown on the chart reached +31%; the two differ because the outcome strips out the market’s beta.

Read this honestly

Informed, not privileged
The tape showed accumulation. It cannot prove who traded, what they knew, or why.
Direction was not predicted
IAS called that a large move was coming — magnitude, never which way. Two cases in this library resolved UP; that is the proof.
Ranked by magnitude
The edge is the magnitude estimate — P(large move) — not raw IAS. A high IAS with a low magnitude estimate is unusual but not notable for movement.
Long volatility, not long puts
These names often spike the other way first. The historical behavior looks like long volatility, not a directional put position.

This is a historical, out-of-sample detection shown for illustration. Informed Accumulation is a research and data signal, not investment advice or a recommendation to buy or sell any security, and it does not predict the direction of any single name. AInvest Options Pilot is not a registered investment adviser, broker-dealer, or financial planner. Options involve substantial risk of loss and are not suitable for all investors. Past performance is not indicative of future results.

KPTI 2018-04-27: Informed Accumulation Before Positive selinexor Phase-2b → accelerated NDA | Ainvest Options Pilot