MKSI
Underperforming without a clear catalyst yet
- MKSI −5.15% on the last session vs SPY +0.12%: −5.3 pts of stock-specific move.
- Market backdrop (Today): Core PPI m/m 1.3% vs 0.3% expected (hotter); Core Retail Sales m/m 0.9% vs 0.6% expected (stronger); S&P futures -0.08%, 10-year yield -3bp in the 30 minutes after.
- Activity: volume on pace for 2.6× its 20-day average.
Bargain & stretch prices
Prices MKSI only reaches with set odds, from its own recent swings. Odds, not a forecast.
| Today | Next 5 sessions | |
|---|---|---|
| Stretch sell side |
242.54 +3.4% ↑ more often after a big drop
reached 3 in 10 days · 31% vs usual 28% |
252.86 +7.8% ↑ more often after a big drop
reached 3 in 10 weeks · 31% vs usual 30% |
| Now | 222.41 · prior close 234.50 | |
| Bargain buy side |
226.73 -3.3% ↓ less often while far below its high
reached 2 in 10 days · 24% vs usual 26% reached today |
217.47 -7.3% ↓ less often while far below its high
reached 3 in 10 weeks · 25% vs usual 27% |
More patient or more eager
| Bargain | Reached | Stretch | Reached | |
|---|---|---|---|---|
| Today | ||||
| Patient | 224.26 | 2 in 10 days↓ 15% vs 17% | 245.21 | 2 in 10 days↑ 20% vs 17% |
| Balanced | 226.73 | 2 in 10 days↓ 24% vs 26% | 242.54 | 3 in 10 days↑ 31% vs 28% |
| Eager | 229.05 | 4 in 10 days↓ 40% vs 41% | 240.08 | 5 in 10 days↑ 49% vs 45% |
| Next 5 sessions | ||||
| Patient | 212.21 | 2 in 10 weeks↓ 16% vs 18% | 259.13 | 2 in 10 weeks |
| Balanced | 217.47 | 3 in 10 weeks↓ 25% vs 27% | 252.86 | 3 in 10 weeks↑ 31% vs 30% |
| Eager | 222.49 | 4 in 10 weeks↓ 41% vs 43% | 247.15 | 5 in 10 weeks↑ 49% vs 48% |
"3 in 10 days" means the price was reached on about 3 of every 10 days like this one. Patient prices are further away and come less often; eager ones are closer and come more often. From MKSI's daily swings (about 3.5% a day lately), anchored on the Oct 14 close. The odds were measured on 10 years of S&P 500 prices (they move about 3 points from year to year with the market: bargain prices come more often in falling years, stretch prices in rising ones), and where a situation below changed them consistently (in at least 8 of 10 years), they are adjusted and marked. In those tests, waiting for the bargain price did no better on average than buying at the close: what you save when it comes, you pay when it doesn't.
Situations on the Oct 14 close
- Stretch price, next session: reached 31% of days instead of the usual 28% (held in 9 of 10 years)
- Stretch price, next 5 sessions: reached 31% of weeks instead of the usual 30% (held in 8 of 10 years)
| Date | That day | 1 week on | 1 month on | 3 months on |
|---|---|---|---|---|
| Oct 8, 2026 | -4.7% | — | — | — |
| Sep 14, 2026 | -10.5% | +7.4% | +3.5% | — |
| Aug 28, 2026 | -5.6% | +1.8% | +4.0% | — |
| Aug 18, 2026 | -6.4% | -9.8% | -19.9% | — |
| Aug 6, 2026 | -7.0% | +5.1% | -10.6% | — |
| Jul 24, 2026 | -4.7% | -9.6% | -18.3% | — |
| Jul 13, 2026 | -4.5% | -7.9% | -16.4% | -24.8% |
| Jul 1, 2026 | -7.6% | -10.3% | -27.6% | -35.4% |
- Bargain price, next session: reached 24% of days instead of the usual 26% (held in 9 of 10 years)
- Bargain price, next 5 sessions: reached 25% of weeks instead of the usual 27% (held in 10 of 10 years)
Big drop and big gain: among MKSI's own worst or best 10% of daily moves, as on the Aftermath tab. The past times are history: in our tests, how a stock did after its earlier times did not predict the next one, and across the S&P 500 none of these situations leaned up or down except, weakly, an all-time high followed by a big drop. Not advice.
Price ladder
| All-time and 52-week closing high Jun 30, 2026 |
444.39 +99.8% |
| 200-day average | 276.09 +24.1% |
| 50-day average | 267.67 +20.3% |
| Stretch, next 5 sessions | 252.86 +13.7% |
| Previous close Oct 14, 2026 |
234.50 +5.4% |
| Now | 222.41 |
| Bargain, next 5 sessions | 217.47 -2.2% |
| 52-week closing low Oct 14, 2025 |
132.13 -40.6% |
Closing prices (all-time = the 28 years Yahoo has). Percentages are the distance from now. These are levels people watch, not levels the price has to respect. Not advice.