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J. Welles Wilder — 3 pages

Reference Supertrend (TradingView Implementation): hl2 Plus or Minus a Multiple of ATR, With a Ratcheting Band and a Close-Based Flip An ATR-based trend line as TradingView implements it: bands at hl2 +/- multiplier x ATR that ratchet, flipping when the close passes the opposite band. TradingView attributes it to Olivier Seban. Economy · Oct 8 Reference Parabolic SAR: Wilder’s Own Estimate Was That Trends Run About 30 Percent of the Time — and the Value Cannot Pass the Prior Two Bars Wilder's stop-and-reverse indicator. One platform's documentation gives his estimate that trends occur roughly 30 percent of the time, and a capping rule the formula alone omits. Retrieved 2026-09-28. Economy · Sep 28 Reference RSI: Wilder’s Smoothing Makes the Value Depend on How Much History You Feed It — One Platform Uses 250 Bars to Contain It Wilder's 1978 oscillator, 0-100, default 14 periods, 70/30 lines. His smoothing makes the value depend on how much history you feed it; StockCharts uses 250 bars. Retrieved 2026-09-28. Economy · Sep 28