Culper Research Short Reports

Overview of the latest short reports by Culper Research.

Total reports

Win rate

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Mean P&L (equal-weighted)

-10.1%

Median P&L

Calculating…

Short report impact

Percentage change from publication for the rest of the session.

Includes only reports with intraday data and precise publication timestamps (mostly US‑listed stocks).

P&L is negative of stock return since T-1 close before publication.

Date	Company	Ticker	Title	Intraday low	Stock Return	Thesis P&L
2025-11-20	Praxis Precision Medicines Inc.	PRAX	Praxis Precision Medicines Inc. (PRAX): Mined the Gap – How PRAX Twisted Dropouts into a Phase 3 “Win” with Make-Believe Data and Half-Baked Analysis	-13.8%	+31.0%	-31.0%
2025-10-23	DoorDash Inc.	DASH	DoorDash: Unauthorized Dasher “Backdooring” Scheme Props Up Delivery Operations, Undermines Safety, and Unravels as Immigration Enforcement Widens	-2.2%	-10.8%	+10.8%
2025-08-21	Tecnoglass	TGLS	Tecnoglass (TGLS): From Barranquilla to Sinaloa	-8.6%	-26.7%	+26.7%
2025-05-20	Archer Aviation	ACHR	Archer Aviation (ACHR): When You Can’t Earn Airtime in the Sky, Buy it on Late Night Television	-4.7%	-24.5%	+24.5%
2025-04-04	Gorilla Technology	GRRR	Gorilla Technology (GRRR): Fake Products, Fabricated Contracts, Fraudulent Partners	-17.8%	-21.2%	+21.2%
2025-03-13	OSI Systems, Inc	OSIS	OSI Systems, Inc. (OSIS): SEDENA Unwinds, DoJ Subpoenas Fly, Execs Wave Goodbye	-15.6%	+46.4%	-46.4%
2025-02-26	AppLovin	APP	AppLovin (APP): Force-Feeding Users with Silent Backdoor Installs and Copying Meta’s Homework	-23.4%	+83.5%	-83.5%
2025-02-04	Applied Optoelectronics	AAOI	Applied Optoelectronics (AAOI): Another Optical Illusion	-20.9%	+2.9%	-2.9%