LARGE CAP CORE STOCK FUND

Fund Overview

Adviser:

Mason Street Advisors, LLC

Subadviser:

Wellington Management Company LLP

Objective/Focus:

Invests in the stocks of large capitalization companies that may include both growth and value stocks, and may represent companies across all market sectors. The objective is long-term growth of capital and income.

Asset Class:

Large-Cap Stocks

Style:

Blend

Fund Facts as of 12/31/18

Fund Inception

05-03-1994

First Available for Variable Annuity

05-03-1994

First Available for Variable Life

05-03-1994

Net Assets

$519.0 Million

Top 10 Portfolio Holdings % of Net Assets

Amazon.com, Inc.

4.3%

Microsoft Corp.

3.6%

Alphabet, Inc. - Class  A

3.5%

Bank of America Corp.

3.2%

Apple. Inc.

2.5%

UnitedHealth Group, Inc.

2.5%

Verizon Communications, Inc.

2.1%

Exxon Mobil Corp.

1.9%

Comcast Corp. - Class A

1.7%

The Boeing Co.

1.6%

Total % of Net Assets

26.9%

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Disclosed Holdings

Sector Weightings % of Equities

Information Technology

17.7%

Health Care

14.9%

Financials

12.1%

Industrials

11.0%

Consumer Discretionary

10.6%

Before investing in a variable product, you should carefully consider the objectives, risks and charges associated with its investment options. For this and other information about a Contract, you should obtain the appropriate Contract and underlying fund prospectuses by contacting your Northwestern Mutual Financial Representative. Read the prospectuses carefully before you invest.

Mason Street Advisors, LLC (MSA) is the principal investment adviser for all the Portfolios in the Northwestern Mutual Series Fund (Series Fund). (Portfolios in the Series Fund are identified by the parenthetical next to the portfolio name.) MSA has engaged and oversees sub-advisers who provide day-to-day management for certain of the Series Fund Portfolios. Each sub-adviser may be replaced without the approval of shareholders. Please see the prospectus for more information. Additional fund options are advised by Russell Investments, Fidelity Investments, Neuberger Berman Investment Advisers LLC and Credit Suisse Asset Management, LLC

All securities are offered through Northwestern Mutual Investment Services LLC, (NMIS), 720 E. Wisconsin Avenue, Milwaukee, WI 53202, 1-866-664-7737. Member FINRA and SIPC. NMIS is a subsidiary of Northwestern Mutual.