The SpaceX IPO was the biggest in market history, and it ran hot from day one. But the float (available shares) was tiny, so most investors never got an allotment. With the IPO out of reach, money is rotating into other space stocks to watch.
That rotation is selective, lifting only a few names. So rather than chase SpaceX, three of them stand out today.
The Money Is Rotating Within Space, Not Out of It
The SpaceX debut did more than mint one giant stock. It pulled fresh money and attention into the whole space basket. That money is now moving, yet it is not lifting everything.
A few names are drawing it in, while most of the sector leaks it out.
This looks like a real basket-driven move, not a broad market drift. The space names tend to move together, with an average correlation of 0.50. That sits just above their 0.49 link to the Nasdaq 100. So the rotation is partly its own, not a risk-on wave.
Note: There is no real space index. So this is a synthetic basket of the most relevant space names, built as a reference point.
The backdrop, though, stays weak. Only a third of these names trade above their 50-day average, a sign of broad caution. So the money is being selective. Instead of lifting the sector, it flows to a small group of leaders. Three of them stand out.
Spire Global (NYSE: SPIR)
Spire is the cheapest way to ride the rotation, and a fresh catalyst is pulling money in. This space stock to watch has surged 143% in 2026, largely on a European defense pivot.
At June’s ILA Berlin Airshow, Spire signed a deal with Germany’s Diehl Defence. Specifically, the work targets satellite early warning against ballistic and hypersonic missiles. Spire also opened a Munich plant that can build up to 100 satellites a year. Therefore, the inflow tracks real defense demand, not hype.
That demand shows up in the flow. Chaikin Money Flow (CMF), a gauge of institutional money flowing in and out, reads 0.137, the strongest pull in the group. Fundamentally, too, Spire is the steadiest of the three. Already, roughly 76% of 2026 revenue is booked, and breakeven is in sight.
The options confirm the bullish lean. The put-call ratio weighs bearish puts against bullish calls. Spire’s reading sits at 0.42 on open interest, the contracts still held, which is call-heavy. It is also down from 1.25 in March.
Still, one day brought a sharp spike in put volume, pushing the ratio to as high as 4.91. After a 143% year-to-date run, that reads as profit protection, not a real bearish turn.
So if the feared dip never lands, those puts lose value, and late shorts may cover. In turn, that covering would add fuel rather than cap the move. This thesis makes SPIR one of the more interesting space stocks to watch.
Redwire (NYSE: RDW)
One closely followed view calls Redwire the best SpaceX alternative, and its product explains why. It builds the space-grade solar arrays that power satellites and spacecraft in orbit. That hardware is hard to copy, so even SpaceX would likely source it rather than build it. So Redwire grows by supplying the sector, not by competing.
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The flow backs the story. CMF reads a positive 0.133, with more money moving in than out. This is second only to SPIR and shows the money moving out of SPCX might be favoring RDW.
The numbers are strong, yet volatile. The stock ripped 223% to its 2026 peak, then pulled back hard. Still, demand holds up, and RDW is still holding onto over 50% of its year-to-date gains.
First-quarter revenue rose 58%, backlog hit a record $498 million, and 2026 guidance stands at $450 million to $500 million. However, the run drew a Jefferies downgrade and a $500 million share sale, so dilution is a real risk.
The options lean bullish, too. Redwire’s put-call ratio reads 0.44 on volume and 0.48 on open interest, both call-heavy. Notably, the volume figure rose this week, from 0.33, yet open interest barely moved.
Therefore, the fresh put activity looks like light hedging after the run, not bearish conviction.
Voyager Technologies (NYSE: VOYG)
Voyager is the boldest bet, and it is built around a space station. Specifically, its centerpiece is Starlab, a commercial replacement for the aging International Space Station. Voyager leads that project with Airbus, Mitsubishi, and MDA Space.
Notably, Starlab’s payload capacity is already 130% booked, before it even launches. So customers have reserved more space than the station will hold, showing demand is real and revenue largely pre-booked. As a result, the stock is up about 35% in 2026.
The flow agrees, if more softly. CMF holds positive at 0.056, the weakest of the three, but still a net inflow. This hints at slow and cautious capital entry.
Recent wins also stack up fast. Voyager raised 2026 guidance toward $255 million, won a $16.5 million defense contract, and is acquiring lunar firm Astrobotic. Still, the catch is patience, because Starlab earns nothing yet.
The options match the group. By daily volume, Voyager’s put-call ratio reads 0.55.
Yet among contracts held longer, it drops to 0.33, firmly call-heavy. So more puts trade each day, but few stay open. The lasting positions still favor calls. Once again, that reads as short-term caution, not a real bearish turn for this space stock.
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