In Q4 1997, a year in which it earned 27%, LTCM returned capital to investors. It also broadened its strategies to include new approaches in markets outside of fixed income: many of these were not market neutral – they were dependent on overall interest rates or stock prices going up (or down) – and they were not traditional convergence trades. By 1998, LTCM had accumulated extremely large positions in areas such as merger arbitrage (betting on differences between a proprietary view of the likelihood of success of mergers and other corporate transactions would be completed and the implied market pricing) and S&P 500 options (net short long-term S&P volatility). LTCM had become a major supplier of S&P 500 vega, which had been in demand by companies seeking to essentially insure equities against future declines.