FSTRVSQSI• 28 Days (Normalized)
FSTR vs QSI (L.B. Foster Company vs Quantum-Si Incorporated)
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.
FSTR Performance $34.94
-7.05%
L.B. Foster Company
Normalized Baseline0.00%
QSI Performance $1.53
+106.76%
Quantum-Si Incorporated
Normalized Baseline0.00%
Alpha Spread Margin QSI LEADS
-113.81 pts
QSI outperforming by 113.81 percentage points
FSTRQSI
Spread Trajectory28 Days (Normalized)
Cumulative Performance Trajectory
Interactive divergence comparison normalized at 0.00% on start date.
FSTR QSI
Comparative Historical Ledger
Daily closing prices, normalized percentages, and relative spread divergence.
Historical Quotes & Breakdown(21 dates)
| Date | FSTR Price | FSTR Gain (%) | QSI Price | QSI Gain (%) | Spread |
|---|---|---|---|---|---|
| Oct 09, 2026 | $34.94 | -7.05% | $1.53 | +106.76% | -113.81% |
| Oct 08, 2026 | $35.42 | -5.77% | $1.22 | +64.86% | -70.63% |
| Oct 07, 2026 | $35.52 | -5.51% | $1.28 | +72.97% | -78.48% |
| Oct 06, 2026 | $36.10 | -3.96% | $1.22 | +64.86% | -68.82% |
| Oct 05, 2026 | $36.95 | -1.70% | $1.28 | +72.97% | -74.67% |
| Oct 02, 2026 | $37.27 | -0.85% | $1.55 | +109.46% | -110.31% |
| Oct 01, 2026 | $- | $1.43 | +93.24% | - | |
| Sep 30, 2026 | $- | $1.07 | +44.59% | - | |
| Sep 29, 2026 | $- | $0.96 | +29.46% | - | |
| Sep 28, 2026 | $37.60 | +0.03% | $0.80 | +7.43% | -7.40% |
| Sep 25, 2026 | $37.47 | -0.32% | $0.79 | +6.24% | -6.56% |
| Sep 24, 2026 | $37.52 | -0.19% | $0.79 | +6.08% | -6.27% |
| Sep 23, 2026 | $37.27 | -0.85% | $0.76 | +2.57% | -3.42% |
| Sep 22, 2026 | $37.77 | +0.48% | $0.79 | +6.08% | -5.60% |
| Sep 21, 2026 | $37.35 | -0.64% | $0.76 | +2.16% | -2.80% |
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