A $5 penny stock nobody could spell last Tuesday just touched $35.75 by Friday's close. Meet Solidion Technology — ticker STI — the space battery fever dream that lit Reddit on fire and produced the single most unhinged three-day candle of 2026.

Here's the timeline, because you need to see the numbers to believe them:

Tuesday, June 2: STI closes at $4.97. Volume: 18,800 shares. This thing was deader than a delisted SPAC. You could've bought the entire day's float with pocket change.

Wednesday, June 3: $5.04. Volume ticks up to 57,600. Still sleepy. But someone — somewhere — just lit the fuse.

Thursday, June 4: Detonation. STI rips to $22.71 on 105,652,800 shares traded. That's not a typo. That's 5,500 times the previous day's volume. The stock didn't just wake up — it clawed through the floorboards, crashed through the ceiling, and kept going.

Friday, June 5: $35.72 at the peak. Another 38 million shares change hands. From Tuesday's close, that's +619% in 72 hours. A $10,000 YOLO on Tuesday afternoon is worth $72,000 by Friday's opening bell.

Monday, June 8: The first crack. STI slides to $28.95, down 19%. The early pumpers are ringing the register. Volume halves to 10 million. The question isn't whether the pullback was coming — it's whether this is a healthy breather or the beginning of the long, ugly trip back to $5.

So what the hell happened?

Solidion dropped a press release claiming its battery technology can power AI data centers in orbit. Let that sink in. Space-based AI infrastructure. It's a thesis that rides two of the hottest narratives on the market simultaneously — the space economy and the AI infrastructure boom — and wraps them in a sci-fi bow that's essentially impossible to disprove because nobody's ever done it before.

The internet ate it whole. The post hit Reddit, StockTwits, and WallStreetBets within hours. The formula was textbook meme-stock rocket fuel: an obscure ticker with a microscopic float, a "breakthrough" narrative too futuristic to value, a press release instead of revenue, and an army of retail traders who'd been starving for the next squeeze play since the AMC/GME era cooled off.

The volume tells the real story. Thursday's 105 million shares on a stock that traded 18,000 the day prior isn't organic discovery. That's algorithmic momentum-chasing colliding with Reddit-coordinated buying, amplified by a float so thin the stock had nowhere to go but vertical. Every buy order moved the ticker. There was no supply. The shorts — if any were dumb enough to be in this name — got absolutely vaporized.

But here's the thing about narratives that can't be disproven: they also can't be proven. Solidion has no revenue. No contracts. No launch date. No orbiting data center. No customer. Just a press release and a dream. The company was worth pocket change on Monday and a third of a billion by Friday on vibes alone.

The Monday pullback to $28.95 is the market waking up with a hangover and checking its wallet. Profit-takers are doing what profit-takers do. The Reddit threads are already splitting into two camps: the diamond-handed believers who swear this is the next IONQ, and the battle-scarred veterans who've seen this movie before and know how it ends.

The quantum computing stocks — QUBT, IONQ, RGTI — ran on the same "impossible to value" playbook. Some held their gains. Most gave them back. The ones that survived had something Solidion doesn't have yet: actual contracts and a path to revenue.

So where does STI go from here? If it finds support around $20 and builds a base, the bulls have a case. Meme stocks that consolidate instead of collapsing can develop real followings — look at what happened with the quantum names after their initial pumps faded. But if the momentum crowd loses interest and the stock starts bleeding back toward single digits, there's no floor except the $5 where this whole fever dream started.

The space battery thesis is genuinely interesting — if it's real. Powering AI infrastructure in orbit is the kind of moonshot that could actually matter in a decade. But a $5 stock that became a $35 stock on a press release isn't trading on a decade-long thesis. It's trading on three days of adrenaline, FOMO, and the most dangerous words in finance: "what if."

Welcome to the wildest trade of 2026. Buckle up.

— The Signal