Roleset id: undercut.01 , counteract, prevent, Source: , vncls: , framnet: undercut.01: UNDERCUT-V NOTES: No Verbnet entry. No comparison. (from undercut.01-v)
Arg0-PAG: preventer, agent
Arg1-PPT: thing counteracted
Example: transitive, active, agentive, all those things
person: third,  tense: present,  aspect: progressive,  voice: active,  form: participle
Moreover, the price volatility that is amplified by program trading is undercutting efforts to woo individual investors back to an OTC market that sorely misses them.
Arg0: the price volatility that is amplified by program trading
Arg1: efforts to woo individual investors back to an OTC market that sorely misses them