The release of a lewd 2005 conversation caught on tape sent Donald Trump's campaign into a spiral after its release late Friday afternoon, and Sunday's brawl of a presidential debate upped the stakes of the race even further. The week leading up to the events, the stocks that stand to do well with Trump in the White House tumbled.

The early part of last week was a relatively quiet one, at least comparatively, for the real estate magnate. The vice presidential debate between Mike Pence and Tim Kaine was largely uneventful, and Trump, who spent much of the week prior wrapped up in the fallout from his performance at the first debate, seemed to be calculating his next move.

Friday's late-afternoon revelation of a tape of Trump making sexually-aggressive comments about women and the events that followed -- numerous Republicans rebuking and withdrawing their endorsements of Trump, a half-hearted apology from the candidate, and an intense brawl at Sunday's presidential debate -- changed all that.

Ahead of the scandal-ridden weekend, TheStreet's Donald Trump Stock Portfolio, a set of 15 stocks that could surge under a Trump presidency, dipped 1.35% from market close Friday, Sept. 30 to market close Friday, Oct. 7. It just edged out TheStreet's Hillary Clinton Stock Portfolio, which fell 1.38%.

Mexican cement company Cemex (CX) - Get Report was the top performer in Trump's portfolio last week. Its price climbed 2.39% to $8.13. The firm announced last week that it has appointed a new chairman and chief executive for its Latin America subsidiary after firing former executives amid investigations into improper payments tied to a land deal in Colombia.

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Tetra Tech (TTEK) - Get Report gained 2.26%, ending the week trading at $36.27. On Monday it announced that it received a $400 million contract from the U.S. Department of Energy for its joint venture with Sealaska Technical Services to provide design-build services for the National Nuclear Security Administration.

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Randgold Resources (GOLD) - Get Report was the biggest drag on the Trump portfolio last week. Its price plunged 11.81% to $88.25 by market close Friday. A selloff in gold hit the materials sector hard, including Randgold. And on Friday, news broke that Mali's government has shut down offices controlled by the company there, alleging it owes about $80 million in unpaid taxes.

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U.S. Steel (X) - Get Report tumbled 6.26% to $17.68 last week. The issue of steel, specifically in the context of China, came up at the second presidential debate Sunday. Trump said the country is "dumping vast amounts of steel" all over the United States, "which is essentially killing our steelworkers and our steel companies." Clinton echoed that China is dumping steel in the United States and took a swipe at Trump. "Donald Trump is buying it to build his buildings, putting steelworkers and American steel plants out of business," she said.

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

Cemex 2.39%

Tetra Tech 2.26%

Capital One Financial (COF) - Get Report 1.70%

Boeing (BA) - Get Report 1.60%

Northrup Grumman (NOC) - Get Report 0.69%

Microsoft (MSFT) - Get Report 0.35%

Bitcoin Investment Trust (GBTC) 0.17%

Elbit Systems (ESLT) - Get Report -0.26%

ExxonMobil (XOM) - Get Report -0.62%

Oracle (ORCL) - Get Report -1.45%

Lockheed Martin (LMT) - Get Report -2.58%

Steel Dynamics (STLD) - Get Report -3.12%

The Geo Group (GEO) - Get Report -3.32%

U.S. Steel -6.26%

Randgold Resources -11.81%