SIVSSRFM• 28 Days (Normalized)
SI vs SRFM (Shoulder Innovations Inc. vs Surf Air Mobility Inc.)
Showing Closing Date Range from Sep 11 to Oct 9, 2026.
Normalized cumulative comparison anchored at 0.00% baseline to illustrate pure alpha, return divergence, and market momentum.
SI Performance $18.13
+4.38%
Shoulder Innovations Inc.
Normalized Baseline0.00%
SRFM Performance $0.95
+85.82%
Surf Air Mobility Inc.
Normalized Baseline0.00%
Alpha Spread Margin SRFM LEADS
-81.44 pts
SRFM outperforming by 81.44 percentage points
SISRFM
Spread Trajectory28 Days (Normalized)
Cumulative Performance Trajectory
Interactive divergence comparison normalized at 0.00% on start date.
SI SRFM
Comparative Historical Ledger
Daily closing prices, normalized percentages, and relative spread divergence.
Historical Quotes & Breakdown(21 dates)
| Date | SI Price | SI Gain (%) | SRFM Price | SRFM Gain (%) | Spread |
|---|---|---|---|---|---|
| Oct 09, 2026 | $18.13 | +4.38% | $0.95 | +85.82% | -81.44% |
| Oct 08, 2026 | $17.89 | +2.99% | $0.93 | +82.71% | -79.72% |
| Oct 07, 2026 | $18.71 | +7.71% | $0.91 | +79.37% | -71.66% |
| Oct 06, 2026 | $19.14 | +10.19% | $1.01 | +98.43% | -88.24% |
| Oct 05, 2026 | $19.60 | +12.84% | $0.89 | +75.05% | -62.21% |
| Oct 02, 2026 | $19.01 | +9.44% | $0.97 | +90.96% | -81.52% |
| Oct 01, 2026 | $- | $1.13 | +122.00% | - | |
| Sep 30, 2026 | $- | $1.20 | +135.76% | - | |
| Sep 29, 2026 | $18.70 | +7.66% | $1.20 | +135.76% | -128.10% |
| Sep 28, 2026 | $17.95 | +3.34% | $1.19 | +133.79% | -130.45% |
| Sep 25, 2026 | $16.99 | -2.19% | $1.11 | +118.07% | -120.26% |
| Sep 24, 2026 | $17.01 | -2.07% | $0.92 | +81.14% | -83.21% |
| Sep 23, 2026 | $17.37 | +0.00% | $0.88 | +73.67% | -73.67% |
| Sep 22, 2026 | $- | $0.77 | +51.28% | - | |
| Sep 21, 2026 | $- | $0.67 | +31.63% | - |
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