Spero Therapeutics
SPRO
SPRO
43 hedge funds and large institutions have $32.1M invested in Spero Therapeutics in 2025 Q2 according to their latest regulatory filings, with 15 funds opening new positions, 9 increasing their positions, 9 reducing their positions, and 10 closing their positions.
New
Increased
Maintained
Reduced
Closed
more capital invested
Capital invested by funds: $ → $
more first-time investments, than exits
New positions opened: | Existing positions closed:
more funds holding
Funds holding: →
more repeat investments, than reductions
Existing positions increased: | Existing positions reduced:
7.9% less ownership
Funds ownership: 27.71% → 19.81% (-7.9%)
68% less call options, than puts
Call options by funds: $447K | Put options by funds: $1.38M
Holders
43
Holding in Top 10
1
Calls
$447K
Puts
$1.38M
Top Buyers
| 1 | +$1.48M | |
| 2 | +$694K | |
| 3 | +$542K | |
| 4 |
SCM
Stonepine Capital Management
Bend,
Oregon
|
+$455K |
| 5 |
ICM
Ionic Capital Management
New York
|
+$435K |
Top Sellers
| 1 | -$6.33M | |
| 2 | -$2.2M | |
| 3 | -$1.91M | |
| 4 |
M
Murchinson
Toronto,
Ontario, Canada
|
-$629K |
| 5 |
Renaissance Technologies
New York
|
-$402K |
