"Here is my proof, directly from the NASDAQ market....where is yours? "
So on the NASDAQ website, they show that on 9/30/2017, SABBY MANAGEMENT, LLC owned 70,000 shares of SGLB and a decrease of 32,946 shares from 6/30/2017. This showed that Sabby had decreased their holdings back in the 3rd quarter and had less shares on 9/30/17 than they did on 6/30/17. But that was 4 months ago.
then you would know that per the Sch 13G (https://www.sec.gov/Archives/edgar/data/788611/000153561018000034/sglb0118.txt) issued by Sabby on 1/8/18, that as of 12/31/17, the two Sabby Funds owned a combined 382,982 shares (154,264 + 228,718) of common stock (an increase of 132,982 shares) and that Shabby Management indirectly owned 235,461 shares of common stock (an increase of 165,461 shares above the 70,000 shares shown on the NASDAQ website).
That’s my proof that Sabby has substantially increased their ownership since 9/30/17 and that their increase more than makes up for Perritt’s small decrease of about 15,000 shares. And if you look back, you will see that Perritt’s 235,000 shares on 12/31/17 is well above the 140,000 shares that they originally reported holding on 4/30/17 on Form N-CRS https://www.sec.gov/Archives/edgar/data/1286087/000089853117000349/perritt-ncsrs.htm. If Perritt did not think that Sigma shares are worth holding, then why didn’t they dump the remaining 235,000 shares for $3 or $4 on 12/22/17?
My proof is based on the latest information on the official SEC website, where large institutional investors and mutual funds are required to report their holdings to the SEC via Form 13Fs and Sch 13Gs, respectively.
Institutional investors and mutual funds do not report their holdings to NASDAQ. NASDAQ computers only gather the quarterly 13F data, not the 13G and other data, from the SEC website. Therefore their computer generated Institutional list doesn’t really give investors a complete picture and its never really up-to-date since most 13Fs aren’t issued until 45 days after the end of the quarter, it just gives you a limited "snap shot" of the recent past.