134.45 USD
↗ 30.62 (29.49%)PRE MARKET (AS OF 09:29 AM EDT)
INSM Stock Premarket
Insmed, Inc.
INSMNASDAQ • USD
Market: OPEN
Premarket trading runs 4:00 AM – 9:30 AM ET.
INSM last traded at $134.45 in premarket, up $30.62 (29.49%) from its previous close of $103.83. Historically, 22% of INSM gap-ups of 5% or more have fully filled within one trading day.
📅 INSM is expected to report earnings around Oct 29, 2026 before the open (estimated), with an estimated EPS of $-0.39. INSM earnings details →
INSM Premarket Chart
Gap Analytics — 5-year history, 5% minimum gap
Over the past 5 years, INSM has had 14 qualifying gap events (gaps of 5% or more at the open) — 9 gap-ups and 5 gap-downs. Gap-ups averaged +25.1%, 56% have fully filled, median time to fill 4 trading days. Gap-downs averaged -9.3%, 40% have fully filled, median time to fill 4 trading days. Most recent: a -5.1% gap down 1 day ago, still unfilled. INSM has 1 unfilled gap from the past 60 days — a -5.1% gap down on Oct 5, 2026, currently 58% retraced. Average 20-trading-day return after a INSM gap up: +12.15%. After a gap down: -6.61%.
Gap Ups9 events
Fill Rate
55.6%
Avg Gap
25.1%
Avg 50% Fill
2d
Avg Fill
4d
Gap Downs5 events
Fill Rate
40.0%
Avg Gap
9.3%
Avg 50% Fill
1d
Avg Fill
4d
Avg Gap Fill by Timeframes
Gap Ups
| 1 day | 1 week | 2 week | 4 week | |
|---|---|---|---|---|
| fills 25% | 56% | 56% | 56% | 67% |
| fills 50% | 33% | 56% | 56% | 56% |
| fills 75% | 33% | 56% | 56% | 56% |
| fills 100% | 22% | 44% | 44% | 44% |
Gap Downs
| 1 day | 1 week | 2 week | 4 week | |
|---|---|---|---|---|
| fills 25% | 80% | 100% | 100% | 100% |
| fills 50% | 60% | 60% | 60% | 80% |
| fills 75% | 40% | 40% | 40% | 40% |
| fills 100% | 20% | 20% | 40% | 40% |
Active Unfilled Gaps (past 60 days)
1 day ago
2026-10-05
Gap %
-5.06%
Gap From
$111.12
% vs Current
+5.60%
retraced 58% to $108.75
Complete Gap History — 14 events
| Date | Gap From | Gap % | Status | Days to 50% | Days to Fill | % of Gap Filled After | |||
|---|---|---|---|---|---|---|---|---|---|
| 1 day | 1 week | 2 week | 4 week | ||||||
| 1 day ago | $111.12 | -5.06% | Open | 1d | — | 58% | 58% | 58% | 58% |
| 2026-08-06 | $99.02 | +29.49% | Open | 39d | — | 7% | 7% | 21% | 38% |
| 2026-05-07 | $137.09 | -14.72% | Open | — | — | 42% | 42% | 42% | 42% |
| 2026-03-23 | $136.00 | +8.18% | Filled | 2d | 24d | 49% | 89% | 89% | 89% |
| 2026-01-09 | $170.27 | +8.66% | Filled | 1d | 1d | 100% | 100% | 100% | 100% |
| 2025-12-18 | $198.46 | -15.47% | Open | 15d | — | 15% | 38% | 38% | 60% |
| 2025-06-10 | $70.68 | +25.41% | Open | — | — | 15% | 15% | 15% | 15% |
| 2024-08-05 | $71.81 | -6.27% | Filled | 1d | 1d | 100% | 100% | 100% | 100% |
| 2024-05-28 | $22.00 | +125.68% | Open | — | — | 19% | 19% | 19% | 19% |
| 2024-05-09 | $26.00 | +8.88% | Filled | 1d | 1d | 100% | 100% | 100% | 100% |
| 2023-09-05 | $22.64 | +6.23% | Open | 48d | — | 4% | 4% | 4% | 4% |
| 2022-11-10 | $18.64 | +5.15% | Filled | 2d | 4d | 40% | 100% | 100% | 100% |
| 2022-10-10 | $22.09 | -5.02% | Filled | 1d | 7d | 99% | 99% | 100% | 100% |
| 2021-12-07 | $26.81 | +8.22% | Filled | 1d | 4d | 82% | 100% | 100% | 100% |
Related: INSM quote & chart · After hours · Technical analysis · Fundamentals · Earnings · Short interest
Frequently Asked Questions
What is INSM's premarket price?
Insmed (INSM) is trading at $134.45 in premarket, up $30.62 (29.49%) from the previous close of $103.83.
Why is INSM moving in premarket?
Insmed (INSM) is up 29.49% from its previous close in premarket trading. Premarket moves are usually driven by company-specific news, earnings results, analyst rating or price-target changes, or broad market and sector sentiment. Check the latest INSM premarket headlines and gap history below for the likely catalyst.
When does INSM premarket trading start?
Premarket trading for INSM on the NASDAQ runs from 4:00 AM to 9:30 AM Eastern Time, ahead of the regular session (9:30 AM – 4:00 PM ET). After-hours runs from 4:00 PM to 8:00 PM ET.
How often does INSM fill its gaps?
Over the past 5 years, 56% of INSM gap-ups have fully filled and 40% of gap-downs have filled. Median time to fill is 4 trading days for gap-ups and 4 trading days for gap-downs.
Does INSM have any unfilled gaps?
Yes. INSM has 1 unfilled gap from the past 60 days. The largest is a -5.1% gap down from Oct 5, 2026 and is currently 58% retraced.
What's the average return after a INSM gap?
Based on 14 qualifying gap events over the past 5 years, the average 20-trading-day return after a INSM gap up is +12.15%, and after a gap down is -6.61%.
When does INSM report earnings?
INSM is expected to report earnings around Oct 29, 2026 before the open (estimated), with an estimated EPS of $-0.39.