It's not about the fractional short interest, it's about the availability of stock to borrow.
A lot of institutional investors and other big holders do not like lending the stock because that depresses the stock price. So the short interest is low and short rebate is high for stocks with high institutional ownership. That is different for stocks held by hedge funds via their primes, stocks that are part of large ETFs and stocks with high retail ownership. Most retail investors hold the stock in a discount broker who usually had a stock lending agreement as part of the user agreement. It's part of the discount brokers model, they charge the rebates from their shorts but do not pass it to the longs. Same with stocks held by ETFs or lower-end prime brokers - they use the borrow rates to juice up their returns.
sle, thanks. That makes sense. However, these super high lend rate stocks that NASDAQ claims have very small short positions, yet the market says have huge short positions and thus 80%, 100%, 120% interest rates are not institutionally owned stocks. Take RNKLF, outside of Eric Sprott buying over 10% Yahoo lists 0.05% owned by institutions Douglas C. Lane & Associates, LLC 190,000 Dec 30, 2018 0.05% 91,200
AIPT at 106% interest rate is
% Held by Institutions 3.45%
It is the least held by institutions that have the highest interest rates.
And the opposite, take CVNA, super high institutionally held,
Top Institutional Holders
Holder Shares Date Reported % Out Value
Spruce House Investment Management LLC 4,870,000 Sep 29, 2018 14.22% 287,768,300
Vanguard Group, Inc. (The) 2,621,582 Sep 29, 2018 7.65% 154,909,280
Blackrock Inc. 2,099,988 Sep 29, 2018 6.13% 124,088,290
CAS Investment Partners, LLC 2,056,159 Sep 29, 2018 6.00% 121,498,435
Goodnow Investment Group, LLC 1,722,320 Sep 29, 2018 5.03% 101,771,888
Sylebra HK Co Ltd 1,603,356 Sep 29, 2018 4.68% 94,742,306
683 Capital Management LLC 1,561,634 Sep 29, 2018 4.56% 92,276,953
Melvin Capital Management LP 1,400,000 Sep 29, 2018 4.09% 82,726,000
Point72 Asset Management, L.P. 1,169,184 Sep 29, 2018 3.41% 69,087,082
Whale Rock Capital Management LLC 1,142,177 Sep 29, 2018 3.33% 67,491,238
Yet CVNA is 52% shorted of all stock! And as guessed so it is so extremely shorted and in extreme demand by shorters, the interest rate is tiny, and sure enough
https://iborrowdesk.com/report/cvna the interest rate is only 2%
Whatever makes sense and follows the laws of economics and logic is the opposite of the truth in the Short World. Everything seems to be backwards and upside down. Welcome to the
Twilight Zone.