The stocks that stand to do well under a Hillary Clinton presidency surged ahead of the first presidential debate on Monday.

TheStreet's Hillary Clinton Stock Portfolio, a set of 15 stocks identified that could surge with Clinton in the White House, rallied 3.11% from market close Friday, September 16 to Friday, September 23. This marks the portfolio's best performance since we began tracking it in late July. TheStreet's Donald Trump Stock Portfolio did even better, gaining 4.28%.

Monday the two major party candidates will meet on stage for the first of three presidential debates set for the 2016 general election. The days leading up to the showdown were a mixed bag for the former secretary of state. She earned the New York Times'endorsement and reportedly the vote of former President George H.W. Bush. A Washington Post-ABC News pollreleased over the weekend showed the contest between her and her rival in a dead heat.

As for the stocks in the Clinton portfolio, U.S. Steel (X) - Get Report was the top performer, climbing 19.11% to $18.95 at market close Friday. U.S. Steel is the only stock in both the Clinton and Trump portfolios. Analysts at Credit Suisse last week called the stock "very undervalued," calling the recent pullback on it "overdone." It reiterated its outperform rating on U.S. Steel and $29 price target.

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Shares of SolarCity (SCTY) rallied 9.94% to $19.24. Elon Musk, cofounder and chairman of SolarCity and CEO of Tesla (TSLA) - Get Report , which is slated to acquired SolarCity, on Thursday tweeted he hopes to release new solar roofs in October.

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Netflix (NFLX) - Get Report was the biggest drag on the Clinton portfolio. Shares of the online streaming platform declined 3.56% to $95.94. Netflix slid last week after a report that it will likely miss third-quarter subscriber targets. CFO David Wells hinted at a Goldman Sachs conference acknowledged that no significant audience growth spikes are on the company's horizon. (Click here to check out the latest technical analysis of Netflix from Timothy Collins of Real Money, TheStreet's premium site for active traders.)

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Walmart (WMT) - Get Report also pulled down the Clinton portfolio, dipping 0.71% to $72.35. While shares of the retailer ended the week lower, Barclays analysts Friday upgraded their rating on the stock and raised its price target to $87 from $70.

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Here's how the entire Clinton portfolio did last week, leading with the top gainers:

U.S. Steel 19.11%

SolarCity 9.94%

CACI International (CACI) - Get Report 4.79%

Tyson Foods (TSN) - Get Report 4.11%

American Electric Power Company (AEP) - Get Report 2.85%

Renewable Energy Group (REGI) - Get Report 2.48%

Aecom (ACM) - Get Report 2.26%

L-3 Communications (LLL) - Get Report 2.25%

SPDR S&P 500 ETF Trust (SPY) - Get Report 1.23%

HCA Holdings (HCA) - Get Report 1.10%

Smith & Wesson (SWHC) 0.84%

Aetna (AET) 0.50%

Goldman Sachs (GS) - Get Report -0.52%

Walmart -0.71%

Netflix -3.56%

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