SI
Shoulder Innovations, Inc.
ZACKSSellTECHBuy
R500#392 today
TARGET+40%
$18.75
-0.79% today · +10.23% 1W
Oct 1 close or latest
PreviewWhy it's moving
Underperforming without a clear catalyst yet
- SI −0.79% on the last session vs SPY +0.18%: −1.0 pts of stock-specific move.
- 47 Reddit mentions in the past 24 hours, 84% positive over the week.
- 1 insider or congressional trade in the past 30 days, including 1 insider sale not under a 10b5-1 plan.
- Market backdrop (Wed): Core PCE Price Index m/m 0.2% vs 0.3% expected (cooler); Final GDP q/q 2.2% vs 1.5% expected (stronger); S&P futures +0.18%, 10-year yield +0bp in the 30 minutes after.
Assembled from Wallsti's own signals. The news-reading agent will explain the move with timestamped sources, and say so when there is no clear catalyst.
Best time to own SI in the past two years
Buying and selling at the close. Each colored stretch is the best window for that holding period; the grey line is the full two years.
Best window per holding period
| Hold for | Buy | Sell | Gain | Rank |
|---|---|---|---|---|
| one single day | Nov 11, 2025 | Nov 12, 2025 | +32.0% | #6 |
| one week | Nov 7, 2025 | Nov 14, 2025 | +33.0% | #26 |
| one month | Jun 2, 2026 | Jul 2, 2026 | +51.9% | #37 |
| 3 months | Apr 29, 2026 | Jul 29, 2026 | +93.2% | #32 |
| 6 months | Feb 5, 2026 | Aug 5, 2026 | +79.8% | #92 |
| one year | Aug 19, 2025 | Aug 19, 2026 | +87.0% | #113 |
Rank #26 for one week means 25 of the S&P 500 components had a better best-one week gain over the past year. Updated .
Today vs. the best starting days
| As of | 1d | 1w | 1m | 3m | 6m | 1y |
|---|---|---|---|---|---|---|
| Today Oct 1, 2026 |
-0.8% | +10.2% | -8.7% | -9.1% | +27.7% | +56.0% |
| Best one single day Nov 11, 2025 |
+3.2% | +1.7% | -8.3% | -6.5% | -24.5% | -24.5% |
| Best one week Nov 7, 2025 |
-1.5% | -5.7% | -15.6% | -9.1% | -26.6% | -26.6% |
| Best one month Jun 2, 2026 |
-1.3% | -7.0% | +3.6% | +3.5% | -8.0% | -7.0% |
| Best 3 months Apr 29, 2026 |
-4.1% | -10.3% | -11.4% | -13.9% | +4.8% | -18.4% |
| Best 6 months Feb 5, 2026 |
-3.1% | -11.9% | -12.5% | +11.3% | -11.2% | -16.5% |
| Best one year Aug 19, 2025 |
-13.2% | -5.4% | -17.3% | -17.3% | -17.3% | -17.3% |
Trailing gains over each window, today and on the day each best window started, to compare today's setup with the best entries.