speculators

n.

投机倒把者，投机商( speculator的名词复数 )；

Do Speculators Drive Crude Oil Futures Prices?
Foreign Speculators in Emerging Equity Markets
Speculators, commodities and cross-market linkages ☆
Foreign Speculators and Emerging Equity Markets
Returns to Speculators: Telser versus Keynes
“Returns to Speculators: Telser Vs. Keynes”
Returns to Speculators: Telser Versus Keynes: Reply
Returns to Speculators and the Theory of Normal Backwardation
Optimal Pricing with Speculators and Strategic Consumers
Hedgers, funds, and small speculators in the energy futures markets: an analysis of the CFTC's Commitments of Traders reports