In the latest market close, Siga Technologies Inc. (SIGA) reached $5.48, with a -1.26% movement compared to the previous day. The stock's change was less than the S&P 500's daily gain of 0.55%.

Shares of Siga Technologies jumped after the company's board declared a 60-cent per-share special cash dividend. The stock was up 12% at $5.95 in early trading. Shares were changing hands at $9 this ...