Strategy. The Adviser allocates a portion of the Portfolio to a capital appreciation and income component (the "Capital Appreciation and Income Component") managed by Wellington Management Company LLP ("Wellington Management" or a "Sub-Adviser") and a portion to a managed risk component (the "Managed Risk Component") managed by Milliman Financial Risk Management LLC ("Milliman" or a "Sub-Adviser"). Milliman manages the Managed Risk Component pursuant to a strategy that seeks to manage portfolio volatility and provide downside risk management. The Adviser seeks to achieve the Portfolio's investment objective by allocating, under normal circumstances, at least 80% of the Portfolio's net assets, plus any borrowings for investment purposes, to the Capital Appreciation and Income Component and up to 20% of the Portfolio's net assets … Show more… The Adviser allocates a portion of the Portfolio to a capital appreciation and income component (the "Capital Appreciation and Income Component") managed by Wellington Management Company LLP ("Wellington Management" or a "Sub-Adviser") and a portion to a managed risk component (the "Managed Risk Component") managed by Milliman Financial Risk Management LLC ("Milliman" or a "Sub-Adviser"). Milliman manages the Managed Risk Component pursuant to a strategy that seeks to manage portfolio volatility and provide downside risk management. The Adviser seeks to achieve the Portfolio's investment objective by allocating, under normal circumstances, at least 80% of the Portfolio's net assets, plus any borrowings for investment purposes, to the Capital Appreciation and Income Component and up to 20% of the Portfolio's net assets to the Managed Risk Component. In managing the Capital Appreciation and Income Component, Wellington Management manages an equity strategy and a fixed-income strategy. Under normal circumstances, approximately 65% of the Capital Appreciation and Income Component will be allocated to the equity strategy, and approximately 35% of the Capital Appreciation and Income Component to the fixed-income strategy, although the Adviser may modify the target allocation from time to time. The Portfolio's equity strategy seeks to provide long-term total returns by investing primarily in common stocks and other equity securities of U.S. large-capitalization companies and, to a lesser extent, U.S. small-capitalization and mid-capitalization companies, and foreign companies. In managing the equity strategy, Wellington Management will allocate the Portfolio's assets across a variety of industries, selecting companies in each industry based on the research of Wellington Management's team of global industry analysts. The Portfolio will typically seek to maintain representation in each major industry represented in the S&P 500 ? Index. Wellington Management may invest up to 15% of the Portfolio's net assets allocated to the equity strategy in securities of foreign issuers and non-dollar securities. In analyzing a prospective investment for its equity strategy, Wellington Management utilizes what is sometimes referred to as a "bottom-up" approach, which is the use of fundamental analysis to identify specific securities for purchase or sale. Fundamental analysis of a company involves the assessment of such factors as its business environment, management quality, balance sheet, income statement, anticipated earnings, revenues and dividends, and other related measures or indicators of valuation and growth potential. Wellington Management's fixed-income strategy seeks to provide long-term total returns by investing in a broad range of high-quality U.S. fixed-income securities. The investment universe primarily includes U.S. government and agency securities, mortgage and structured finance securities, asset-backed securities, and investment-grade U.S. dollar-denominated corporate and sovereign securities. The fixed-income strategy does not invest in below investment grade securities or securities denominated in foreign currencies. The restriction on below investment grade securities applies at the time of purchase. The fixed-income strategy may invest in fixed-income-related derivatives, including, but not limited to futures contracts, forward transactions and swap agreements. In the Managed Risk Component, the Adviser seeks to manage return volatility by employing Milliman to execute a managed risk strategy, which consists of using hedge instruments to reduce the downside risk of the Portfolio's securities. Milliman may use hedge instruments to accomplish this goal, which may include: equity futures contracts, treasury futures contracts, currency futures contracts, and other hedge instruments judged by Milliman to be necessary to achieve the goals of the managed risk strategy. Milliman may also buy or sell hedge instruments based on one or more market indices in an attempt to maintain the Portfolio's volatility at the targeted level in an environment in which Milliman expects market volatility to decrease or increase, respectively. Milliman selects individual hedge instruments that it believes will have prices that are highly correlated to the Portfolio's positions. Milliman adjusts hedge instruments to manage overall net Portfolio risk exposure, in an attempt to stabilize the volatility of the Portfolio around a predetermined target level and reduce the potential for portfolio losses during periods of significant and sustained market decline. Milliman seeks to monitor and forecast volatility in the markets using a proprietary model, and adjust the Portfolio's hedge instruments accordingly. In addition, Milliman will monitor liquidity levels of relevant hedge instruments and transparency provided by exchanges or the counterparties in hedging transactions. Milliman adjusts futures positions to manage overall net Portfolio risk exposure. Milliman may, during periods of rising security prices, implement strategies to preserve gains on the Portfolio's positions. Milliman may, during periods of falling security prices, implement additional strategies to reduce losses in adverse market conditions. In these situations, Milliman's activity could significantly reduce the Portfolio's net economic exposure to equity securities. Following market declines, a downside rebalancing strategy will be used to decrease the amount of hedge instruments used to hedge the Portfolio. Milliman also adjusts hedge instruments to realign individual hedges when the Adviser rebalances the Portfolio's asset allocation profile. Depending on market conditions, scenarios may occur where the Portfolio has no positions in any hedge instruments. Show less