On Tuesday, Palantir (NASDAQ: PLTR) closed at $162.66, up $37.01 – a 29.45% jump after quarterly revenue grew 93% and the company sharply raised its full-year guidance on booming demand for its AI software. The next morning, Shopify (NASDAQ: SHOP) rose $20.94 to $144.24, up 16.98% after a second-quarter beat of its own, with revenue up 34% and guidance lifted again. The headlines called both moves "pops." For a certain kind of long-term shareholder, they were something rarer and sweeter: spiffy-pops.
The term belongs to Motley Fool Chief Rule Breaker David Gardner, who says he helped coin it because the language of investing lacked a word for the thing. A "pop" is any sharp single-day gain – David draws the line at 5% – usually on good earnings, a big deal, or an analyst upgrade. A spiffy-pop is a different animal. It happens, in David's words, when a stock "rises more in a single day than you paid for it."
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Read that again, because the math has nothing to do with the size of the percentage move and everything to do with your cost basis. Buy a stock at $50, hold as it climbs to $1,200, and watch it gain $65 one morning: the press logs a tidy 5% pop, but the stock just rose more in a day ($65) than you paid to own it ($50).
The condition it requires is the whole point: you have to buy early, and you have to hold. Sell along the way and you forfeit the chance – you can't spiffy-pop on a stock you no longer own.
Shopify is close to a textbook case. The Motley Fool's Rule Breakers service first recommended it on February 24, 2016 at $2.10 a share (adjusted for the company's later stock split), and again a month later at $2.62. Those two recommendations now sit up 6,384.58% and 5,053.79% on the Rule Breakers scorecard – the kind of multibagger arithmetic that makes a spiffy-pop of this size possible. Wednesday's $20.94 gain was nearly ten times what members paid for the position back in 2016: not so much a spiffy-pop as a whole stack of them at once. And the recommendation that set it up is only about ten years old.
Palantir tells a similar story from a different starting line, and this week it came with names attached. Tuesday's $37.01 gain meant that any investor whose cost basis sat below about $37 – most who bought in the company's first couple of years as a public stock – watched it spiffy-pop in an afternoon.
On August 4, David shared some of their stories on X. One reader, Andrew Gibson, recounted a phone call with a recently retired friend he used to talk stocks and the Rule Breaker Investing podcast with during shifts on the railroad. The friend had spotted Palantir's 29% jump – more than the two of them had paid for the stock two years earlier, both using principles they'd absorbed from David. "We have a #Spiffypop, Blake!" Andrew told him, then passed along Blake's thanks. Fernando Rey Lozano reported his own Palantir spiffy-pop the same day, and David added a quiet postscript: "(Me too, for the record.)"
David's point in naming the thing was never vocabulary for its own sake; it was to show that outcomes most investors file under "unattainable" are, for those who buy great companies and hold them for years, closer to routine – a product, as he puts it, of habits multiplied by traits. None of these investors timed an earnings beat. They bought early, sat still through years of noise, and let the arithmetic do the rest. The spiffy-pop isn't a trick or a signal to chase; it's what patience looks like when it finally shows up on the ticker.
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The Motley Fool has positions in and recommends Palantir Technologies and Shopify. The Motley Fool has a disclosure policy.