The Priceline Group Inc. (PCLN) and TripAdvisor, Inc. (TRIP) are scheduled to report third quarter earnings after the closing bell this afternoon. Beating or missing earnings estimates for these online booking sites is not as important as forward guidance. Why? Priceline and TripAdvisor stocks are not cheap, as they sport elevated P/E ratios of 40.24 and 59.00, respectively. Neither company pays dividends, so it's all about projected growth for the quarters ahead.

Looking at the daily charts, Priceline stock has been above a "golden cross" since April 18, 2016, when the stock closed at $1,353.89. A "golden cross" occurs when a stock's 50-day simple moving average crosses above its 200-day simple moving average to indicate that higher prices lie ahead. The stock set its all-time intraday high of $2,067.99 on Aug. 8, 2017.

TripAdvisor stock has been a laggard below a "death cross" since Feb. 8, 2016, when the stock closed at $55.88. A "death cross" occurs when a stock's 50-day simple moving average falls below its 200-day simple moving average to indicate that lower prices lie ahead. The stock set its post-election low of $35.34 on June 21, 2017.

Here is a look at the weekly charts and some tips on how to trade these two online travel stocks. (For more, see: Are Online Travel Stocks' High Multiples Sensible?)

The weekly chart for Priceline

Technical chart showing the performance of The Priceline Group Inc. (PCLN) stockCourtesy of MetaStock Xenith

The weekly chart for Priceline ended last week positive, but it faces a potential downgrade to neutral if this week's close is below its five-week modified moving average of $1,891.02. The 200-week simple moving average, or the "reversion to the mean," is $1,378.17, last tested during the week of Feb. 12, 2016, when the average was $1,012.59. The 12 x 3 x 3 weekly slow stochastic reading is projected to rise to 49.01 this week, up from 46.42 on Nov. 3.

Given this chart, my trading strategy is to buy weakness to my annual value level of $1,752.07 and to reduce holdings on strength to my weekly and monthly risky levels of $1,940.37 and $2,033.59, respectively. Semiannual and quarterly pivots are $1,867.61 and $1,888.04, respectively. (See also: Priceline's Rare Stumble Sends Shares Below 50-Day MA.)

The weekly chart for TripAdvisor

Technical chart showing the performance of TripAdvisor, Inc. (TRIP) stockCourtesy of MetaStock Xenith

The weekly chart for TripAdvisor is negative, with the stock below its five-week modified moving average of $39.90. The 200-week simple moving average, or the "reversion to the mean," is $69.30, last tested during the week of Jan. 29, 2016, when the average was $70.05. The 12 x 3 x 3 weekly slow stochastic reading is projected to decline to 37.04 this week, down from 42.88 on Nov. 3.

Given this chart, my trading strategy is to buy weakness to my weekly value level of $36.04 and to reduce holdings on strength to my quarterly and semiannual risky levels of $45.43 and $53.52, respectively. My monthly pivot of $39.01 has been a magnet so far in November. (For additional reading, check out: TripAdvisor Beats on Q2 Earnings, Revenues Match.)

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