$ISRG
stock+ Make pickLast price
$440.75
Today
▲ 0.89%
Open
$436.65
Day range
$434.05 – $443.58
Volume
1.7M
52-wk range
$328.57 – $603.88
Fails-to-deliver = shares that weren't delivered to settle a trade by the due date. Persistent spikes are a classic short-squeeze / illiquidity tell the degen crowd watches.
source: SEC fails-to-deliver data · free · updated twice monthly (~3–4 wk lag)
source: FINRA OTC Transparency (ATS + non-ATS) · free · weekly, ~2–4 wk lag