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Buy the Dip: 10 Stocks Insiders Are Loading Up On After the Recent Market Sell-Off

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Thursday, November 5 represented the worst trading session for the U.S. market in over a year. the Nasdaq Composite dropped 5.52%, the S&P 500 fell 4.36%, and the Dow shed 3.44%, as Wall Street’s post-midterm optimism could not last long. Concerns around a potential weakness in AI spending reversed the post-election rally and led to almost $2.5 trillion wiped out of the U.S. market.

In the middle of this chaos, many names showed resistance and are still trading at their all-time highs. In our recent list of 10 Best All-Time High Stocks to Buy According to Wall Street, we uncover some of the stocks that still offer captivating upside to investors.

Various market sectors took a hit, including semiconductors which got affected the most. Technology was also amongst the worst-performing segments, dipping almost 8%. Just two days prior to the November 5 crash, we covered Warren Buffett’s list of the 10 best stocks with attractive upside potential.

Situations like this trigger fear within the market. But for corporate insiders, including company executives and directors, it offers attractive entry points. These insiders have a more detailed understanding of their businesses compared to investors and analysts. They know about a company’s growth prospects, margin potential, and product pipelines way before the market does.

Hence, a drop in share price does not necessarily mean that their stance on the company’s outlook would also change. Through open-market purchases out of their own pockets, the insiders send some clear signals to the market. Unlike stock awards or option exercises, these purchases come out of personal savings, and no one is forced to make them.

Methodology:

To identify relevant stocks for this article, we explored Insider Monkey’s insider-purchase database for the U.S.-listed companies with market capitalization above $1 billion. We narrowed down our search to stocks with a 1-month share price decline of more than 20%, as of November 6. Finally, we shortlisted stocks with insider purchase values above $50,000 from October 6 to November 6, and ranked stocks in an ascending order of their purchase values. Our selection excludes stock awards and option exercises from the qualifying purchases.

10. Alphatec Holdings Inc. (NASDAQ:ATEC)

1-Month Share Price Drop: -30.8%

Short Interest: 10%

Alphatec Holdings Inc. (NASDAQ:ATEC) has shed more than 30% over the last 1 month. Bears continued to pile in after the company’s revenue and earnings miss reported in its recent third quarter 2026 print. Investor concerns around the stock are linked to various factors including deflated biologics sales and a downward adjustment to its full-year outlook.

On October 30, director David M. Demski bought 60,000 common shares at a price of $6.81, resulting in a total purchase value of $408,600. The purchase increased his reported position in Alphatec from 431,635 to 491,635 shares (see all insider purchases in ATEC shares here).

Despite muted topline growth in the last two quarters, the company still holds a competitive standing within the spinal surgery space amid its innovative approach toward prone transpsoas (PTP) procedure. Madison Small Cap Fund sees upside potential for Alphatec and here is what it had to say about the stock in its Q3 2026 investor letter.

Based on data tracked across 1,000+ hedge funds by Insider Monkey, institutional sentiment toward the company remains favorable. According to 13F filing data, number of smart-money managers with long-term exposure in the stock went up marginally during the last quarter. A total of 38 hedge funds held positions by the end of Q2 2026, compared to 37 in Q1 2026.

9. SPX Technologies Inc. (NYSE:SPXC)

1-Month Share Price Drop: -20.7%

Short Interest: 3.83%

SPX Technologies Inc. (NYSE:SPXC) supplies highly engineered and solution-driven infrastructure equipment products and technologies, covering the HVAC and detection and measurement segments. The stock closed at $142.71 on November 6, extending its 2026 decline to more than 24%.

With a market capitalization of $7.15 billion, it has traded within a 52-week range of $137.86 and $251.08, and is currently priced at a trailing earnings multiple of 23.75x. With a forward P/E multiple of 14.41x, analysts are expecting earnings to expand over the coming year. See how Conestoga Capital Advisors highlighted SPX Technologies in its Q3 2026 investor letter.

On November 3, independent board member Brian Deck bought 3,000 shares for a total value of $493,020. The purchase followed the stock’s recent bearish run, bringing Deck’s total holdings in SPX Technologies to 3,742 shares (see the history of insider purchases in SPXC).

Institutional interest across 1,000+ hedge funds tracked by Insider Monkey shows a slight increase in exposure to the stock. According to 13F filing data, total number of hedge funds that held positions in the stock jumped to 39 by the end of second quarter in 2026, relative to 36 in the previous quarter.

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