Trend-Following Backtester · Guide · backtest 한국어

equity · US

Fastly, Inc. backtest

10 trend-following strategies were compared on the full daily history of Fastly, Inc.. 10 beat buy-and-hold CAGR; 볼린저 밴드 돌파 ranks first by Sharpe, matching the main backtester. The return/drawdown alternative is 볼린저 밴드 돌파 (CAGR 16.7%, MDD -31.5%).

Data 2019-05-17 ~ 2026-07-31daily bars 1,811 (7.2 years)Costs 0.5%Venue XNASMonthly snapshot 2026-07-31

Results by strategy

10 of 10 beat buy and hold (CAGR -0.9%, drawdown -96.1%).

Sharpe leader (same as main): 볼린저 밴드 돌파 — CAGR 16.7%, MDD -31.5%, Sharpe 0.76, 6% exposure.

CAGR reference leader: ROC 모멘텀 — CAGR 30.7%, MDD -78.6%, exposure 46%.

Return/drawdown alternative: 볼린저 밴드 돌파 — CAGR is 17.6%p higher than buy and hold, while drawdown improves by 64.6%p (CAGR 16.7%, MDD -31.5%, exposure 6%).

The alternative must retain 75% of buy-and-hold CAGR, improve drawdown by at least 20% and 5 percentage points, and stay below 95% exposure; the ranking weights return retention 60% and drawdown improvement 40%.

Strategy · parametersCAGRMDDSharpeCalmarTotalTradesExposure
볼린저 밴드 돌파
n=17, k=3.5
16.7%-31.5%0.760.533.1x86%
Keltner 채널 돌파
emaPeriod=17, atrPeriod=8, mult=3.5
16.0%-33.2%0.730.482.9x87%
ROC 모멘텀
n=103, threshold=-0.03
30.7%-78.6%0.720.396.9x6946%
ADX / DI 방향성
period=18, threshold=39
12.9%-31.5%0.690.412.4x44%
SMA 크로스오버
fast=12, slow=183
27.8%-71.4%0.690.395.9x1342%
EMA 크로스오버
fast=24, slow=181
21.9%-72.5%0.610.304.2x1140%
Donchian 채널 돌파
entryN=43, exitN=74
11.4%-76.7%0.490.152.2x1355%
Supertrend
period=29, mult=4.5
12.3%-71.4%0.480.172.3x2837%
MACD
fast=3, slow=34, signal=13
5.5%-83.3%0.410.071.5x17553%
Parabolic SAR
step=0.03, maxStep=0.38
5.5%-84.0%0.390.071.5x19950%
Buy and hold-0.9%-96.1%0.43-0.010.9x1100%
1x 10x 2020 2021 2022 2023 2024 2025 2026 ROC 모멘텀볼린저 밴드 돌파Buy and hold
볼린저 밴드 돌파 (Sharpe leader), ROC 모멘텀 (CAGR reference), Buy and hold.
0% -24% -48% -72% -96% 2020 2021 2022 2023 2024 2025 2026 Buy and holdROC 모멘텀볼린저 밴드 돌파
볼린저 밴드 돌파 maximum drawdown -31.5% (2026-04-02 → 2026-04-13), prior peak not yet recovered.

Rules of the top strategy

Breaking above the upper band (average plus a multiple of volatility) signals a strong move up.

Method and caveats

Past performance does not guarantee future returns. Parameters were carried forward from the latest full optimization and replayed on this monthly dataset. 0.5% trading costs are included; taxes, slippage and rejected orders are not.
Re-optimize the same period and setupAll asset reports

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