1,241.45 USD
↗ 6.99 (0.57%)AFTER HOURS (AS OF Fri 07:59 PM EDT)
MPWR Stock After Hours
Monolithic Power Systems, Inc.
MPWRNASDAQ • USD
Market: CLOSED
After-hours trading runs 4:00 PM – 8:00 PM ET.
MPWR last traded at $1241.45 after hours, up $6.99 (0.57%) from its regular-session close of $1234.46.
📅 MPWR is expected to report earnings around Oct 29, 2026 after the close (estimated), with an estimated EPS of $7.69. MPWR earnings details →
MPWR After Hours Chart
MPWR After Hours News
Gap Analytics — 5-year history, 5% minimum gap
Over the past 5 years, MPWR has had 34 qualifying gap events (gaps of 5% or more at the open) — 21 gap-ups and 13 gap-downs. Gap-ups averaged +6.8%, 76% have fully filled, median time to fill 3 trading days. Gap-downs averaged -7.8%, 69% have fully filled, median time to fill 15 trading days. Most recent: a +13.9% gap up on Jul 31, 2026, which filled in 2 trading days. Average 20-trading-day return after a MPWR gap up: +3.75%. After a gap down: +1.75%.
Gap Ups21 events
Fill Rate
76.2%
Avg Gap
6.8%
Avg 50% Fill
2d
Avg Fill
3d
Gap Downs13 events
Fill Rate
69.2%
Avg Gap
7.8%
Avg 50% Fill
5.5d
Avg Fill
15d
Avg Gap Fill by Timeframes
Gap Ups
| 1 day | 1 week | 2 week | 4 week | |
|---|---|---|---|---|
| fills 25% | 57% | 67% | 76% | 86% |
| fills 50% | 38% | 57% | 67% | 81% |
| fills 75% | 19% | 57% | 62% | 71% |
| fills 100% | 10% | 48% | 48% | 62% |
Gap Downs
| 1 day | 1 week | 2 week | 4 week | |
|---|---|---|---|---|
| fills 25% | 54% | 92% | 92% | 92% |
| fills 50% | 15% | 46% | 69% | 77% |
| fills 75% | 15% | 38% | 38% | 62% |
| fills 100% | 0% | 15% | 31% | 46% |
Complete Gap History — 34 events
| Date | Gap From | Gap % | Status | Days to 50% | Days to Fill | % of Gap Filled After | |||
|---|---|---|---|---|---|---|---|---|---|
| 1 day | 1 week | 2 week | 4 week | ||||||
| 2026-07-31 | $1316.18 | +13.89% | Filled | 1d | 2d | 51% | 100% | 100% | 100% |
| 2026-07-14 | $1291.38 | +5.91% | Filled | 2d | 3d | 30% | 100% | 100% | 100% |
| 2026-07-09 | $1315.51 | +6.36% | Filled | 2d | 3d | 46% | 100% | 100% | 100% |
| 2026-07-07 | $1346.13 | -5.31% | Filled | 2d | 3d | 35% | 100% | 100% | 100% |
| 2026-06-26 | $1438.30 | -5.62% | Filled | 9d | 25d | 20% | 38% | 61% | 77% |
| 2026-06-23 | $1537.88 | -6.17% | Filled | 3d | 28d | 46% | 71% | 71% | 71% |
| 2026-06-18 | $1448.21 | +5.60% | Filled | 3d | 3d | 17% | 100% | 100% | 100% |
| 2026-06-08 | $1481.05 | +5.31% | Filled | 1d | 2d | 53% | 100% | 100% | 100% |
| 2026-04-08 | $1191.22 | +5.38% | Open | — | — | 5% | 5% | 5% | 5% |
| 2026-02-06 | $1155.99 | +8.13% | Filled | 1d | 3d | 86% | 100% | 100% | 100% |
| 2025-10-31 | $1087.56 | -6.20% | Filled | 54d | 55d | 27% | 30% | 30% | 30% |
| 2025-10-13 | $904.44 | +6.98% | Filled | 15d | 20d | 22% | 22% | 22% | 100% |
| 2025-05-12 | $637.77 | +8.81% | Open | 10d | — | 25% | 25% | 81% | 90% |
| 2025-04-23 | $511.82 | +6.66% | Open | — | — | 39% | 39% | 39% | 39% |
| 2025-04-14 | $533.13 | +5.18% | Filled | 1d | 1d | 100% | 100% | 100% | 100% |
| 2025-04-10 | $561.84 | -6.38% | Filled | 3d | 10d | 13% | 97% | 100% | 100% |
| 2025-04-03 | $590.65 | -6.38% | Filled | 15d | 17d | 23% | 39% | 39% | 100% |
| 2024-11-11 | $761.30 | -17.34% | Open | 48d | — | 16% | 46% | 46% | 46% |
| 2024-10-31 | $919.81 | -10.16% | Open | — | — | 3% | 3% | 3% | 3% |
| 2024-08-05 | $795.76 | -5.97% | Filled | 1d | 2d | 95% | 100% | 100% | 100% |
| 2024-07-31 | $781.85 | +5.46% | Filled | 2d | 2d | 17% | 100% | 100% | 100% |
| 2024-02-08 | $645.41 | +5.36% | Filled | 28d | 28d | 2% | 2% | 2% | 2% |
| 2023-10-31 | $404.00 | +5.35% | Open | 1d | — | 77% | 77% | 77% | 77% |
| 2023-08-01 | $559.49 | -8.49% | Open | 1d | — | 91% | 91% | 91% | 91% |
| 2023-07-20 | $574.51 | -5.14% | Open | 8d | — | 17% | 46% | 64% | 64% |
| 2023-05-25 | $415.73 | +9.23% | Open | — | — | 19% | 19% | 19% | 19% |
| 2023-05-05 | $458.93 | -11.74% | Filled | 10d | 15d | 26% | 34% | 56% | 100% |
| 2023-02-09 | $463.00 | +5.76% | Filled | 9d | 33d | 0% | 14% | 56% | 64% |
| 2022-12-13 | $393.03 | +5.05% | Filled | 1d | 1d | 100% | 100% | 100% | 100% |
| 2022-11-10 | $343.84 | +5.87% | Filled | 12d | 30d | 1% | 14% | 14% | 65% |
| 2022-08-02 | $462.30 | +6.93% | Filled | 19d | 20d | 40% | 40% | 40% | 100% |
| 2022-05-03 | $410.87 | +8.31% | Filled | 1d | 5d | 54% | 100% | 100% | 100% |
| 2022-02-11 | $407.29 | +8.20% | Filled | 1d | 16d | 60% | 89% | 89% | 100% |
| 2021-10-29 | $549.71 | -6.79% | Filled | 2d | 7d | 40% | 99% | 100% | 100% |
Frequently Asked Questions
What is MPWR's after-hours price?
Monolithic Power Systems (MPWR) is trading at $1241.45 after hours, up $6.99 (0.57%) from its regular-session close of $1234.46.
Why is MPWR moving after hours?
MPWR is up 0.57% in after-hours trading. Moves in this session almost always follow something released after the 4:00 PM ET close — an earnings report, guidance, a filing, or news — and trade on far thinner volume than the regular session, so the size of the move can overstate what the market will settle on at the next open.
When does MPWR after-hours trading start and end?
After-hours trading in MPWR on the NASDAQ runs from 4:00 PM to 8:00 PM ET on trading days, immediately after the regular session closes. Not every broker offers the full window, and liquidity thins sharply after about 6:30 PM ET.
Will MPWR's after-hours move hold at the open?
An after-hours move that carries into the next session becomes an opening gap, and MPWR's gap history is the best guide to what happens next: 76% of MPWR gap-ups have fully filled, and 69% of gap-downs have filled over the past 5 years. Fill rates this high mean a large after-hours move is more often faded than extended.
When does MPWR report earnings?
MPWR is expected to report earnings around Oct 29, 2026 after the close (estimated), with an estimated EPS of $7.69. Earnings are the most common cause of a large after-hours move, since most companies report after the close.