Per https://en.wikipedia.org/wiki/List_of_nearest_stars_and_brown_dwarfs#List there are exactly fifteen stars within 10 light years of the solar system (at least to our knowledge):

• the Sun (duh!)

• the three stars of Alpha Centauri, all sun-like

• Barnard's Star, a red dwarf

• Luhman 16, which consists of two stars, both brown dwarf

• WISE 0855−0714, a brown dwarf

• Wolf 359, a red dwarf

• Lalande 21185, a red dwarf

• Sirius, which consists of two stars

• Gliese 65, which consists of two stars

So if we can enumerate all the planets of these 15 stars and check each one for biosignatures, we'll be done.

Another market that won't be resolved in my lifetime.

@ProjectVictory That's why you get the money invested back in loans, isn't it