Synopsys Inc. stock steadies near recent lows as insider selling and guidance frame outlook

Synopsys Inc. stock (ISIN US8716071076) closed at USD 384.97 on Nasdaq on September 18, 2026, up 1.00% on the day and lingering near the lower end of its recent trading range after a sharp early-September pullback as investors weigh insider selling against firm earnings guidance.

Stock holds above recent one-year low

According to MarketBeat, Synopsys shares finished regular trading on Nasdaq at USD 384.97 on September 18, 2026, a gain of USD 3.80 or 1.00% compared with the previous close, with post-market trading later sliding modestly to around USD 384.00.

Price and volume data compiled by Dhan show that on September 18, 2026, Synopsys stock opened at USD 385.00, traded between an intraday high of USD 386.27 and a low of USD 380.38, and closed at USD 384.87, with 1,352,907 shares changing hands, underscoring active trading at current levels.

The same Dhan data indicate that Synopsys shares ended September 4, 2026, at USD 393.80 after touching an intraday high of USD 418.12, meaning the September 18, 2026 closing level of roughly USD 384.9 stands about USD 34.3, or 8.2 percent, below that early-month high, a move that has caught the attention of investors watching for support around the recent one-year low highlighted in several market commentaries.

Guidance underpins earnings outlook

In parallel with the share-price consolidation, Synopsys is leaning on its earnings guidance to support the investment case in the current fiscal year. According to an overview of analyst information on MarketBeat dated September 20, 2026, Synopsys has set its fourth-quarter 2026 earnings per share guidance at USD 4.10 to USD 4.16 and its full-year 2026 earnings per share guidance at USD 15.04 to USD 15.10.

The same MarketBeat report notes that analysts following Synopsys currently assign the shares an average rating of Moderate Buy, with thirteen analysts rating the stock Buy, four rating it Hold and one rating it Sell, and a consensus price target of USD 562.67, implying potential upside of roughly 46.1 percent versus the September 18, 2026 closing price of USD 384.97 if the targets and guidance are delivered.

Broader context on Synopsys's business mix comes from coverage in the Korea-based business outlet Chosun Biz, which reports that Synopsys generated USD 7.054 billion in revenue in fiscal year 2025, with about 13.4 percent of that total coming from Korea, illustrating the geographic breadth of demand for its electronic design automation software and semiconductor intellectual property.

Insider selling and institutional flows

While fundamentals and guidance remain robust, insider trading reports have added a note of caution for some investors. According to insider activity data on MarketBeat as of September 19, 2026, Synopsys insiders have sold a total of 217,888 shares in the last 24 months for aggregate proceeds of USD 100,724,180.58, and insiders currently own about 0.56 percent of the company's outstanding stock.

The same insider overview highlights that CEO Sassine Ghazi sold 14,604 shares on September 15, 2026 at an average price of USD 374.88, for a transaction value of USD 5,474,747.52, and that long-time insider Aart de Geus sold 24,641 shares on September 1, 2026 at an average price of USD 419.44, totaling USD 10,335,421.04, adding to earlier August share disposals.

Balancing these insider sales, institutional investors have continued to build positions. As noted in the Nykredit transaction article on MarketBeat dated September 20, 2026, the Danish financial institution acquired 51,916 Synopsys shares, underscoring ongoing institutional confidence even as corporate insiders take profits.

Valuation, technicals and sector position

Technical and valuation snapshots from platforms such as TradingView show Synopsys with a market capitalization around USD 86.22 billion and highlight that the share price has risen by 5.31 percent over the past week, even after the early-September drop from historic highs recorded in 2025.

These figures place Synopsys firmly among the larger constituents of the Nasdaq Global Select Market, with its electronic design automation tools and semiconductor intellectual property benefiting from secular growth in advanced chip design, artificial intelligence workloads and system-level simulation, as reflected in cross-company collaborations referenced by several recent industry articles.

For equity investors, the combination of a roughly USD 86 billion market capitalization, fiscal year 2025 revenue of USD 7.054 billion, and fiscal year 2026 earnings-per-share guidance in the mid-teens underscores that Synopsys trades as a profitable, high-margin software and IP provider rather than as a hardware manufacturer, which can influence how the market reacts to guidance surprises and sector-wide sentiment shifts.

Stock price context for September 18, 2026

Per Nasdaq price data summarized by Seeking Alpha, Synopsys shares closed at USD 384.97 on Nasdaq on September 18, 2026 at 4:00 p.m. Eastern Time, with a marginal after-hours uptick to USD 385.00 reported at 7:59 p.m., marking a modest rebound from the one-year low documented in mid-September while still leaving the stock well below its historic peak from 2025.

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