Swedish chip optical component maker Sivers, whose stock is up ~1,700% YTD, giving it a ~$2.5B market cap, has become one of the country's most-shorted stocks (Jonas Ekblom/Bloomberg)

Jonas Ekblom / Bloomberg: Swedish chip optical component maker Sivers, whose stock is up ~1,700% YTD, giving it a ~$2.5B market cap, has become one of the country's most-shorted stocks — A small Swedish semiconductor firm that's soared about 1,700% this year has become one of the country's most-shorted stocks.