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APH Amphenol Corporation

Technology

79.84 +0.54 +0.68% Close 11/2
Since 2024-12-02 +120.3%
Open
80.83
High
83.90
Low
79.37
Prev close
79.30
Volume
16.6M
Amplitude
5.71%
P/E
25.3
P/B
11.4
Revenue YoY (TTM)
+57.6%
52W 71.44 178.52

Is Amphenol Corporation a buy? Fundamentals and valuation first

As of 2026-10-30

Quality: Good, Growth: Good, Momentum: Good, Risk / liquidity: Good; Valuation: Pricey.

Valuation Pricey Free-cash-flow yield is Good, but Price / book is Expensive.
TTM P/E 25.34 63th percentile Pricey
Price / book 11.44 93th percentile Expensive
Free-cash-flow yield (%) 2.62 56th percentile Good
US Stock Backtest in Python: Price-to-Book Ratio StrategyQuality Factor Investing: A US Quality Value Backtest
Quality Good ROE, TTM is Top; FCF margin, TTM is Good.
ROE, TTM (%) 34.7 89th percentile Top
Operating margin, TTM (%) 27.86 81th percentile Top
FCF margin, TTM (%) 15.5 70th percentile Good
Quality Factor Investing: A US Quality Value Backtest
Growth Good Revenue growth, TTM YoY is Top; Diluted EPS growth, TTM YoY is Good.
Revenue growth, TTM YoY (%) 57.56 88th percentile Top
Diluted EPS growth, TTM YoY (%) 4.33 58th percentile Good
Momentum Good 240-day return is Good, but 60-day return is Average.
60-day return (%) -6.9 50th percentile Average
240-day return (%) 19.41 71th percentile Good
Momentum Trading Strategy: A 12-1 Momentum Backtest
Risk / liquidity Good 20-day dollar volume is Top; 60-day annualized volatility is Good.
20-day dollar volume 974,472,721 99th percentile Top
60-day annualized volatility (%) 39.11 45th percentile Good
Factor Investing Explained: 10 Classic Factors in US Stocks

Amphenol Corporation (APH) today

2 quant signals active · As of 2026-10-30

Win rate and excess are historical post-trigger stats vs the market. Click a signal for its full definition and samples; history does not predict future results.

FinLab Studio

From Amphenol Corporation to every stock like it

AI finds several complementary traits of Amphenol Corporation across different dimensions, combines them into a multifactor strategy, and backtests it against the market.

Screen stocks like Amphenol Corporation

Amphenol Corporation (APH) peers and tracking

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Amphenol Corporation (APH) quant signal backtests

Signals active now

Each active condition is tested against this stock’s own history and benchmarked versus the S&P 500.

Filed revenue acceleration

Active · now 57.56%

TTM revenue growth is at least 10% and improved versus the prior filed quarter; event date is the SEC filing date.

15 historical occurrences (since 2018-05-03)

Average forward return after Filed revenue acceleration

20-day: Win 57.1%, Sample 14, Median +2.02%, Excess +0.88%, Beat mkt rate 57.1%

60-day: Win 71.4%, Sample 14, Median +7.58%, Excess +5%, Beat mkt rate 71.4%

120-day: Win 64.3%, Sample 14, Median +11.31%, Excess +12.65%, Beat mkt rate 71.4%

120 days after: historical avg +16.02%

20-day +1.25%
60-day +6.63%
120-day +16.02%
20-day
60-day
120-day
Win
57.1%
71.4%
64.3%
Sample
14
14
14
Median
+2.02%
+7.58%
+11.31%
Excess
+0.88%
+5%
+12.65%
Beat mkt rate
57.1%
71.4%
71.4%

Over 14 occurrences, 120-day forward avg gained 16.02%, beat the market by 12.65 pts; win rate 64.3%.

EPS surprise beat

Active · now 9.74%

Reported EPS beat consensus estimate by at least 5%; event date is the earnings-surprise timestamp.

PEAD: Post-Earnings Announcement Drift Backtest
35 historical occurrences (since 2015-01-21)

Average forward return after EPS surprise beat

20-day: Win 69.7%, Sample 33, Median +3.53%, Excess +2.24%, Beat mkt rate 72.7%

60-day: Win 72.7%, Sample 33, Median +5.58%, Excess +3.27%, Beat mkt rate 57.6%

120-day: Win 78.1%, Sample 32, Median +12.08%, Excess +7.27%, Beat mkt rate 62.5%

120 days after: historical avg +13.54%

20-day +4.04%
60-day +6.62%
120-day +13.54%
20-day
60-day
120-day
Win
69.7%
72.7%
78.1%
Sample
33
33
32
Median
+3.53%
+5.58%
+12.08%
Excess
+2.24%
+3.27%
+7.27%
Beat mkt rate
72.7%
57.6%
62.5%

Over 32 occurrences, 120-day forward avg gained 13.54%, beat the market by 7.27 pts; win rate 78.1%.

Valuation regime and forward returns

Daily TTM P/E is converted into an expanding own-history percentile, then grouped into five valuation regimes. Forward returns use adjusted prices over the next 240 trading days.

PE percentile bandSample days240-day avg returnMedianWin rateAvg excess (vs index)
0-20 You are here1026+39% +34.1% 88.6% +26.6%
20-40 134+45.6% +46.6% 100% +19.1%
40-60 90+22.4% +21.7% 100% +8.7%
60-80 154+31.2% +31.1% 100% +4.1%
80-100 3Insufficient data

Quarterly EPS is aligned by SEC filing date before it is forward-filled to daily prices. The expanding percentile uses only information available up to each day.

Current TTM P/E is about 25.34, placing it in the 1.1 own-history percentile, inside the 0-20 bucket.

More history: Valuation × momentum analogs, Market-wide momentum baseline, Signals not active now

Valuation × momentum analogs

Each historical day is grouped by own-history P/E tercile and 60-day momentum direction, then tested for the next 120-trading-day adjusted return.

Valuation
Momentum
Cheap (own-history bottom third)
Middle
Expensive (own-history top third)
60-day momentum up
+16.2%
Win rate 83.4% Excess +10.2%
830d
+16.9%
Win rate 99.2% Excess +5.7%
122d
+12.9%
Win rate 100% Excess -2.7%
143d
60-day momentum down
Now
+23.2%
Win rate 86.3% Excess +15%
422d
Insufficient data
(3d)
Insufficient data
(7d)

Currently in “Cheap (own-history bottom third) × 60-day momentum down”: across 422 historical days, 120-day forward avg gained 23.2%, win rate 86.3%, beat the market by 15%.

Days = trading days in this bucket; returns use adjusted prices, ex-costs. 60-day momentum: direction of this stock's price over the past 60 trading days.

Market-wide momentum baseline

Across 99,493 liquid US common-stock samples, top-quintile 6-month momentum was followed by an average 60-trading-day return of +6.42%, a 58.4% positive-return rate, and +3.08 percentage points of average excess return versus the S&P 500.

Baseline: weekly samples since 2016 where a liquid US common stock ranked in the top quintile by 126-trading-day momentum. Forward return is 60 trading days; excess return is versus S&P 500 (^GSPC).

Signals not active now

Inactive signals still show the stock-specific historical forward-return distribution for context.

52-week adjusted-price high

Pending

Adjusted close first reaches a 252-trading-day high; repeated hits within 20 days count once.

31 times historically; 60-day forward avg +1.86%, win rate 50%, beating the market by +0.19 pts on average.

Top-quintile 6-month momentum

Pending

The stock ranks in the top 20% of the liquid US common-stock universe by 126-day adjusted return.

Momentum Trading Strategy: A 12-1 Momentum Backtest

12 times historically; 60-day forward avg +4.34%, win rate 63.6%, beating the market by -1.13 pts on average.

Method and limits

  • Returns use us_price:adj_close, adjusted for splits and dividends where available.
  • Excess returns use world_index:^GSPC as the S&P 500 benchmark proxy.
  • Quarterly fundamentals are aligned to SEC filing dates before daily valuation studies.
  • The promoted universe starts from active NYSE/NASDAQ common stocks, then applies price and dollar-volume gates.
  • Snapshot-only tables such as analyst consensus, DCF, us_ratios, and us_key_metrics are intentionally excluded from historical evidence.
  • Overlapping event windows are descriptive distributions, not independent samples.

This page is for historical data analysis and education only. It is not investment advice. Backtests and historical return distributions do not predict future performance; evaluate risk independently before trading.