Management Risk Member Management Risk Member GuideMark(R) World ex-US Fund RS Shares GuideMark(R) World ex-US Fund RS Shares, C000270756 GWURX Derivatives Risk Member Derivatives Risk Member Equity Risk Member Equity Risk Member Mortgage- And Asset-Backed Securities Risk Member Mortgage- And Asset-Backed Securities Risk Member GuideMark(R) World ex-US Fund Service Shares GuideMark(R) World ex-US Fund Service Shares, C000017034 GuideMark(R) Emerging Markets Fund GuideMark(R) Emerging Markets Fund, S000006183 Series GuideMark(R) Emerging Markets Fund Service Shares GuideMark(R) Emerging Markets Fund Service Shares, C000017031 Class, GMLVX GuideMark(R) Core Fixed Income Fund GuideMark(R) Core Fixed Income Fund, S000006189 Series Variable Rate Securities Risk Member Variable Rate Securities Risk Member GuideMark(R) World ex-US Fund GuideMark(R) World ex-US Fund, S000006186 Series Collateralized Debt Obligations Risk Member Collateralized Debt Obligations Risk Member Foreign Securities Risk Member Foreign Securities Risk Member Credit Risk 1 Member Credit Risk 1 Member U.S. Government Agency Obligations Risk Member U.S. Government Agency Obligations Risk Member Small And Medium Capitalization Company Risk Member Small And Medium Capitalization Company Risk Member Russell 3000® Index (reflects no deduction for fees, expenses or taxes) Russell 3000® Index (reflects no deduction for fees, expenses or taxes) Tax Risk Inflation-Indexed Securities Member Tax Risk Inflation-Indexed Securities Member Portfolio Turnover Risk Member Portfolio Turnover Risk Member Russell 2500™ Index (reflects no deduction for fees, expenses or taxes) Russell 2500™ Index (reflects no deduction for fees, expenses or taxes) Bloomberg U.S. Aggregate Bond Index (reflects no deduction for fees, expenses or taxes) Bloomberg U.S. Aggregate Bond Index (reflects no deduction for fees, expenses or taxes) Interest Rate Risk 1 Member Interest Rate Risk 1 Member Growth Investment Risk Member Growth Investment Risk Member GuideMark(R) Small/Mid Cap Core Fund GuideMark(R) Small/Mid Cap Core Fund, S000006185 Series GuideMark(R) Large Cap Core Fund GuideMark(R) Large Cap Core Fund, S000006182 Series GuideMark(R) Small/Mid Cap Core Fund RS Shares GuideMark(R) Small/Mid Cap Core Fund RS Shares, C000270755 GSMRX Market Risk Member Market Risk Member MSCI World ex-USA Index (reflects no deduction for fees, expenses or taxes) MSCI World ex-USA Index (reflects no deduction for fees, expenses or taxes) Service Shares Prospectus Service Shares Prospectus MSCI Emerging Markets Index (reflects no deduction for fees, expenses or taxes) MSCI Emerging Markets Index (reflects no deduction for fees, expenses or taxes) Exchange-Traded Funds Risk Member Exchange-Traded Funds Risk Member Russell 1000® Index (reflects no deduction for fees, expense or taxes) Russell 1000® Index (reflects no deduction for fees, expense or taxes) Emerging Markets Risk Member Emerging Markets Risk Member GuideMark(R) Emerging Markets Fund RS Shares GuideMark(R) Emerging Markets Fund RS Shares, C000270754 GEPRX Inflation-Indexed Securities Risk Member Inflation-Indexed Securities Risk Member RS Shares Prospectus RS Shares Prospectus Liquidity Risk Member Liquidity Risk Member Financials Sector Risk Member Financials Sector Risk Member Currency Risk Member Currency Risk Member GuideMark(R) Small/Mid Cap Core Fund Service Shares GuideMark(R) Small/Mid Cap Core Fund Service Shares, C000017033 Class Value Investment Risk Member Value Investment Risk Member Information Technology Sector Risk Member Information Technology Sector Risk Member Quantitative Investment Techniques Risk Member Quantitative Investment Techniques Risk Member Extension Risk Member Extension Risk Member GuideMark(R) Core Fixed Income Fund RS Shares GuideMark(R) Core Fixed Income Fund RS Shares, C000270757 GCFQX GuideMark(R) Large Cap Core Fund Service Shares GuideMark(R) Large Cap Core Fund Service Shares, C000017030 Class, GMLGX GuideMark(R) Large Cap Core Fund RS Shares GuideMark(R) Large Cap Core Fund RSShares, C000270753 Class GLCPX Regional Risk Member Regional Risk Member Maturity Risk Member Maturity Risk Member Debt/Fixed Income Securities Risk Member Debt/Fixed Income Securities Risk Member Securities Lending Risk Member Securities Lending Risk Member GuideMark(R) Core Fixed Income Fund Service Shares GuideMark(R) Core Fixed Income Fund Service Shares, C000017037 Class