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The best indicator for Arthur J. Gallagher & Co. (AJG)

We backtested 366 indicators across daily, weekly and hourly charts on real Arthur J. Gallagher & Co. (AJG) history. Here's what actually worked — risk-adjusted, out-of-sample, with costs.

Signaling LONG right now — Ehlers Reflex (Daily) has been long for 17 bars, as of 2026-06-12.
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Momentum · Daily

Ehlers Reflex

On the daily chart, this is the strongest risk-adjusted edge we found for Arthur J. Gallagher & Co. (AJG) over ~42.0 years — trailing buy-and-hold by 3.5% CAGR.

11.5%
CAGR
0.72
Sharpe
-30.1%
Max DD
56.3%
Win rate
2.03
Profit factor
-3.5%
vs Buy&Hold
Confluence · Daily

Best multi-indicator combo

HalfTrendDonchian Breakout

Going long only when all 2 agree was the strongest confluence setup we found for Arthur J. Gallagher & Co. (AJG) — trailing buy-and-hold by 7.0% CAGR, out-of-sample. Fewer, higher-conviction trades than any single indicator.

8.0%
CAGR
0.6
Sharpe
47.0%
Win rate
215
Trades
-7.0%
vs Buy&Hold
Best by timeframe

The winner on each chart

Daily
Ehlers Reflex
-3.5% · Sharpe 0.72
Weekly
Chande-Kroll Stop (fast)
-3.8% · Sharpe 0.61
Full results

Every indicator, ranked

Ranked by Sharpe (risk-adjusted return). Hypothetical, fees included.

#IndicatorTFCAGRSharpeMax DDWinTradesvs B&H
1Ehlers Reflex Daily11.5%0.72-30.1%56.3%355-3.5%
2Aroon Daily10.8%0.68-51.6%46.3%350-4.1%
3Aroon Oscillator Daily10.8%0.68-51.6%46.3%350-4.1%
4Supertrend (7,3) Daily11.1%0.68-50.4%48.8%160-3.9%
5Donchian 10 Break Daily11.1%0.68-57.8%47.2%212-3.8%
6HalfTrend Daily10.7%0.66-51.9%44.0%309-4.3%
7Instantaneous Trendline Daily10.7%0.66-40.7%44.4%399-4.3%
8Supertrend Fast (10,2) Daily10.5%0.65-58.8%45.3%276-4.5%
9Williams Fractals Daily10.4%0.65-41.0%47.0%219-4.6%
10Supertrend (10,2) Daily10.5%0.65-58.8%45.3%276-4.5%
11Supertrend (10,3) Daily10.4%0.63-69.9%48.4%155-4.5%
12Intraday Momentum Index Daily8.9%0.63-41.3%80.0%125-6.1%
13ADXR Daily8.7%0.63-38.4%48.5%301-6.2%
14Adaptive Supertrend Daily10.2%0.63-66.2%40.5%341-4.8%

= held up out-of-sample. Hypothetical, costs included. See methodology.

What this means

For Arthur J. Gallagher & Co. (AJG), Ehlers Reflex on the daily timeframe gave the best balance of return and risk in our test. It still trailed buy-and-hold on raw return — but remember: this is a hypothetical backtest of a standard rule, not a recommendation. Markets change. See the methodology and disclaimer.

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