<div id="readability-page-1"> Zscaler Inc (NASDAQ:ZS) stock has pulled back sharply from its Nov. 3 three-year high of $336.99, last seen down 0.6% to trade at $241.86, heading for its 12th loss in the last 14 trading sessions. Now looks like a good time to buy in on the dip, however, as the cybersecurity stock is testing a historically bullish trendline on the charts. Per Schaeffer's Senior Quantitative Analyst Rocky White, ZS is within 0.75 of the 320-day moving average's 20-day average true range (ATR), after remaining above it 80% of the time during the past two weeks and 80% of the last 42 trading sessions. This signal has occurred eight other times over the past 10 years, after which the stock was higher one month later 75% of the time with an average 10.5% gain. <img src="https://imageproxy.pbkrs.com/https://schaeffers-cdn.s3.amazonaws.com/images/default-source/schaeffers-cdn-images/2025/december/intraday/zs-dec2.png/query-c2Z2cnNuPTE0NmJiZjA2XzI?x-oss-process=image/auto-orient,1/interlace,1/resize,w_1440,h_1440/quality,q_95/format,jpg" width="578" height="326" original-src="https://imageproxy.pbkrs.com/https://schaeffers-cdn.s3.amazonaws.com/images/default-source/schaeffers-cdn-images/2025/december/intraday/zs-dec2.png/query-c2Z2cnNuPTE0NmJiZjA2XzI"/> A move of similar magnitude would halve ZS'S 20% quarterly drawdown. Another bullish case is Zscaler stock's 14-day relative strength index (RSI) of 13.3, firmly in &#34;oversold&#34; territory, which often precedes a short-term bounce. An unwinding of pessimism amongst options traders could give the shares a lift as well. Though calls are still outweighing puts on an absolute basis, ZS' 10-day and 50-day call/put volume ratios at the International Securities Exchange (ISE), Cboe Options Exchange (CBOE), and NASDAQ OMX PHLX (PHLX) ranks higher than 83% of 84% of readings from the past year, respectively. Amid a post-earnings volatility crush, options are affordable. ZS' Schaeffer's Volatility Index (SVI) of 39% which stands higher than just 16% of all other readings from the past year, implying that near-term option traders are pricing in relatively low volatility expectations. </div>

Zscaler Inc（納斯達克代碼：ZS）股票從三年高點大幅回落，目前交易價格為 241.86 美元。該股票正在測試一個歷史上看漲的趨勢線，暗示可能出現買入機會。歷史數據顯示，這一信號在 75% 的情況下會在一個月內帶來 10.5% 的收益。該股票的 14 天相對強弱指數（RSI）顯示其被超賣，通常預示着短期反彈。期權交易者的悲觀情緒正在消退，目前由於低波動率預期，期權價格相對便宜

Zscaler 的 “逢低買入” 信號幾乎從不出錯