Traders are gearing up for Trump's tax cut plan
donald trump arms outstretched
donald trump arms outstretched

(Donald Trump is welcoming back traders betting on the success of his proposed policies with open arms.Reuters / Yuri Gripas)

Just when investors thought they were out, President Donald Trump is pulling them back in.

Months after the so-called "Trump trade" fizzled, traders are once again being enticed by the possibility of a pro-business policy overhaul — and piling into the areas of the market that could benefit the most from the new president's plans.

The latest trigger is a tax proposal that's set to be released on September 25 — one that's expected to reveal specifics around a lowering of the corporate tax rate, as well as a one-time repatriation tax holiday for companies holding trillions of dollars overseas.

The renewed willingness to trade on this is a big change of sentiment for investors. After pumping up stock prices on the hopes that Trump and a Republican legislature would push through tax cuts and infrastructure spending to boost economic growth and fill corporate coffers, they were eventually worn out as the promises repeatedly failed to materialize.

Once able to create or erase billions of dollars of market value with a single tweet, the president's influence looked to be waning.

Investors are now snapping back to attention, seduced by the possibility of further gains, even with major US stock indexes already resting confidently at record highs. But it must be noted that the Trump trade's recovery is still in its early stages, perhaps indicating greater reservations this time around.

Here are two areas drawing the most renewed interest. We'll be tracking these to see how investors feel about the plan's prospects as it approaches and after it is unveiled next week.

The companies paying the most taxes

Since 2015, Trump has been adamant about cutting the federal corporate tax rate from its current 35% to 15%. While he doesn't appear to have much support from his fellow Republicans, who have called a decrease all the way to 15% unworkable, there's no denying that investors are feeling increasingly confident about the most highly-taxed companies, which would benefit most from such a measure.

As indicated by the chart below, a Goldman Sachs index tracking the group saw all of its post-election gains relative to the broader market erased by mid-March. Now, amid rising optimism around some sort of tax cut, it's been ticking up in recent weeks.

high tax vs spx v2
high tax vs spx v2

(After losing their "Trump bump" in a matter of months, the stocks of companies paying the highest taxes are recovering.Business Insider / Andy Kiersz, data from Bloomberg / Goldman Sachs)