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Beta

-
259.77 -6.66 (-2.50%) 08/31/2026
Amazon.com, Inc. (AMZN)
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Beta Analysis

AMZN vs. SPY · 500 trading days · 01 Sep 2024 – 01 Sep 2026
Beta
1.35
Slope vs SPY
Adjusted Beta
1.23
Blume, toward 1.0
Alpha
+0.3%
Annualized, mkt-adj
0.43
Explained by SPY
Correlation
0.66
Daily returns
Vol AMZN
34.2%
Annualized
Vol SPY
16.6%
Annualized
Key Observations
  • High-beta / aggressive (β = 1.35): AMZN amplifies SPY — a 1% benchmark move maps to ~1.35%, cutting both ways.
  • Benchmark explains 43% of AMZN's daily variance (R² = 0.43); a meaningful share is stock-specific, so treat beta as approximate.
  • Forward-looking adjusted beta ≈ 1.23 (Blume: pulls the raw β one-third of the way toward the market's 1.0).
  • Annualized volatility: AMZN 34.2% vs SPY 16.6% — 2.06× as volatile (more than the benchmark).
Derived from the values above · point-in-time over the selected window · not investment advice.
Historical Daily Returns and Regression Analysis

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