Why insider trading matters?

Numerous studies have examined whether there is evidence that U.S. insiders systematically trade on private information despite the legal deterrence. The consensus appears to be that insider purchases (but not sales) tend to be followed by positive abnormal stock price performance, particularly for small growth stocks.

- Prof. B. Espen Eckbo, Dartmouth College
PDF SOLUTIONS INC (PDFS)
Sector: Technology; Industry: Software—Application

PDF Solutions, Inc. provides proprietary software and intellectual property products for integrated circuit (IC) designs, electrical measurement hardware tools, methodologies, and professional services in the United States, Canada, China, Taiwan, France, Germany, Italy, Japan, Korea, and internationally. The company also provides DFI Systems, such as DFI on-chip instruments, and eProbe non-contactless E-beam tool; and Characterization Vehicle (CV) infrastructure, which includes CV test chips and pdFasTest electrical testers.


Trade Date Insider Title Buy/Sell #Shares Price Value Option
2013-02-23 Yu Albert YC Director Sell 10,155 $6.85 $69,526 Yes
2012-02-22 LANZA LUCIO Director Buy 8,000 $6.50 $51,960 No
2011-12-14 LANZA LUCIO Director Buy 8,500 $6.25 $53,112 No
2011-12-08 LANZA LUCIO Director Buy 20,218 $6.21 $125,548 No
2011-11-29 LANZA LUCIO Director Buy 6,000 $6.10 $36,600 No
2011-11-21 LANZA LUCIO Director Buy 18,000 $6.01 $108,180 No
2011-11-15 LANZA LUCIO Director Buy 6,000 $5.86 $35,176 No
2011-11-10 HEINRICHS R STEPHEN Director Buy 5,313 $5.48 $29,130 No
2010-11-26 Yu Albert YC Director Sell 1,400 $4.05 $5,668 No
2010-11-05 Yu Albert YC Director Sell 2,813 $4.06 $11,413 No
2010-04-27 Yu Albert YC Director Sell 2,812 $4.84 $13,616 No
2010-02-16 Yu Albert YC Director Sell 2,445 $3.91 $9,567 No
2009-08-27 JENSEN JAMES D VP, Yield Aware - FDC Buy 4,000 $2.64 $10,570 No
2009-05-20 Yu Albert YC Director Sell 2,447 $1.71 $4,175 No

Insider Smart

Planet Fitness, Inc (PLNT) - Our position in PLNT is also inspired by insider trading, if insiders are comfortable and confident buying around $50, it is an easy hold if you can pick it up at an even lower price. Our avg cost of the position is ~$40 and is now with 50% profit.

Insider Smart

Delta Airlines (DAL) - From an insider's perspective: airlines are the first ones to go under due to the pandemic. A lot of concerns were raised on possible bankruptcy especially amid by the dump from Buffett. However, insiders of Delta were bold enough to buy when Buffett was fear. And Delta is the only airline bought by insiders post-Buffett-dump.