Short Interest Monitor

中文标题

空头头寸监测

Charles Schwab09/16/2026updated 10/17/2026

Unknown economy

Citable research brief

Core conclusion · Tlines extraction

Schwab's Short Interest Monitor highlights elevated and rising short interest in tech and emerging aerospace names. AST SpaceMobile drew shorts after missing Q2 estimates and delaying its continuous space-based cellular broadband launch to early 2027. FactSet's short interest jumped about 25% amid AI disruption fears. Joby Aviation saw a surge after missing estimates and announcing a $750 million equity distribution plan, raising dilution concerns. The monitor covers ten equities with at least $2 billion market caps and short interest of at least 10% of shares outstanding.

Institution: Charles Schwab
Published: 09/16/2026
Research topic: Not explicitly stated
Time horizon: Not explicitly stated

Key arguments

AST SpaceMobile short interest spiked after missing Q2 earnings and revenue estimates and rescheduling its continuous space-based cellular broadband launch from late 2026 to early 2027.
FactSet short interest rose roughly 25% amid fears of AI disruption, particularly after OpenAI's ChatGPT for Financial Services release, despite strong fiscal Q3 earnings and 6.4% year-over-year revenue growth.
Joby Aviation short interest surged after missing Q2 estimates and announcing a $750 million equity distribution plan, with dilution concerns and no full FAA approval for its eVTOL aircraft.
The monitor lists ten equities with market caps of at least $2 billion and short interest representing at least 10% of shares outstanding.

Key numbers

ASTS Q2 net loss per share: $0.77
ASTS Q2 revenue: $31.5 million
ASTS price-to-sales ratio (trailing 12-month): ~148x
FDS short interest increase: ~25%
JOBY equity distribution plan: $750 million

Main risks

Short selling involves potentially unlimited risks and must be done in a margin account.
There is no guarantee the brokerage firm can maintain a short position, and the firm may close it out without regard to profit or loss.
The monitor is for illustrative purposes; individual situations vary and past performance does not guarantee future results.

Corresponding source evidence

FDS reported strong fiscal third-quarter earnings in July, topping analysts' estimates while posting 6.4% year-over-year revenue growth.
Joby Aviation (JOBY) also saw its short interest surge in late August after the company missed second-quarter earnings estimates and announced a $750 million equity distribution plan, which sparked dilution concerns.

Context: the conclusion is Tlines' automated extraction, not the institution's wording. Quoted evidence is publisher wording. Scope and date must travel with the conclusion.

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