Thursday brought a mixed bag for U.S. markets, with the Dow Jones climbing more than 600 points while other indices showed less enthusiasm. But if you were watching individual stocks, there were some spectacular moves worth talking about.

The Headline Grabber: Diamond Hill's Big Payday

The star of the day was Diamond Hill Investment Group Inc (DHIL), which rocketed 45.3% to $170.74 after announcing that First Eagle agreed to acquire the company for $175 per share in an all-cash deal valued at $473 million. That's the kind of premium that makes shareholders very happy on a Thursday morning.

Double-Digit Winners

Planet Labs PBC (PL) led the charge among other gainers, jumping 29.7% to $16.79. The satellite imaging company delivered third-quarter sales that beat expectations and issued fourth-quarter guidance above analyst estimates. As if that weren't enough, Planet Labs also raised its FY26 sales outlook, giving investors plenty of reasons to bid up the stock.

Nextdoor Holdings Inc (NXDR) climbed 22.9% to $3.11, though the social networking platform didn't announce specific news driving the move.

Gemini Space Station Inc (GEMI) jumped 19.2% to $13.54 after revealing Wednesday that its subsidiary, Gemini Titan, LLC, received regulatory clearance to offer prediction markets to U.S. customers. That's a growing business opportunity as prediction markets gain legitimacy.

Rhythm Pharmaceuticals Inc (RYTM) gained 13.5% to $119.00 following the announcement of preliminary results from its exploratory Phase 2 trial of setmelanotide in patients with Prader-Willi syndrome. Positive trial data tends to move biotech stocks, and Thursday was no exception.

Candel Therapeutics Inc (CADL) rose 12.4% to $6.52, while VersaBank (VBNK) added 12.34% to reach $14.52.

Perpetua Resources Corp (PPTA) gained 10.4% to $28.37, and iHeartMedia Inc (IHRT) jumped 10.1% to $5.19.

More Notable Movers

NovaBay Pharmaceuticals Inc (NBY) climbed 9.5% to $2.65, while Idaho Strategic Resources Inc (IDR) gained 9.3% to $43.62.

Immunovant Inc (IMVT) jumped 8.5% to $25.57 after pricing a $550 million common stock offering. Typically, dilution concerns would weigh on a stock, but investors seemed comfortable with the company's capital raise.

Vail Resorts Inc (MTN) gained 8.3% to $153.30 following the release of first-quarter results. Apparently, the ski resort operator's numbers were good enough to warm investor sentiment.

Mosaic Co (MOS) surged 7.2% to $25.47, benefiting from broader strength in fertilizer stocks. The catalyst? Reports that Ukraine attacked Russian fertilizer plants, potentially disrupting global supply chains. When supply gets tight, prices tend to rise, and fertilizer producers benefit.

Wayfair Inc (W) gained 6.9% to $99.76, while Centene Corp (CNC) rounded out the list with a 5.3% gain to $40.72.

All told, Thursday delivered a healthy mix of acquisition premiums, earnings beats, regulatory wins, and geopolitical supply shocks to keep traders busy. Not a bad day for the bulls.