Seagate Stock Tumbles as Toshiba's HDD Expansion Plans Fuel Bearish Options Activity

Seagate Technology (NASDAQ: STX) shares plunged on Friday following a report that competitor Toshiba plans a significant expansion of its hard disk drive (HDD) production, prompting a wave of bearish activity in the options market. The news triggered concerns about future pricing pressure and market share in the data storage industry.

Stock Plunges on Competition Fears

Seagate stock was down approximately 11% in morning trading on October 2, while shares of rival Western Digital (NASDAQ: WDC) fell around 7%. The sell-off was sparked by a report from Nikkei stating that Toshiba intends to invest about ¥60 billion ($400 million) to double its HDD production capacity by fiscal 2027.

According to the report, Toshiba aims to grow its market share by capacity from just over 10% to a target of 30%. The news prompted significant profit-taking in Seagate, a stock that had surged roughly 240% year-to-date prior to Friday's session, making it vulnerable to negative catalysts.

Options Traders Bet on Further Declines

Options market data from Bloomberg indicated a clear shift toward bearish sentiment, with put volume of 23,388 contracts outpacing call volume of 19,315. Traders appeared to be establishing new positions betting on a deeper correction or hedging against a potential crash.

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Key activity pointed to expectations of a significant drop:

• New Positions: Volume in the November $580 and $560 puts far exceeded open interest, signaling fresh bearish bets on strikes roughly 30% below the current price.
• Bearish Spreads: A sizable trade in the October $550/$410 put spread suggests a strategy that would profit from a stock decline of 33% to 50% within two weeks.

Analyst View and Volatility Context

Despite the market's sharp reaction, some analysts believe the fears may be overstated. Citi’s Asiya Merchant noted that the market might be overreacting, as Toshiba’s expansion plans are contingent on its suppliers for critical components, which could cap how much new capacity actually reaches the market.

Volatility metrics also suggest a nuanced picture. While put buying was heavy, the 90/110 skew, which measures the relative cost of puts to calls, decreased. This indicates that traders may be using far out-of-the-money puts for cheap leverage rather than paying a high premium for immediate downside protection.