Quest Diagnostics
1,038 hedge funds and large institutions have $18.4B invested in Quest Diagnostics in 2025 Q4 according to their latest regulatory filings, with 143 funds opening new positions, 350 increasing their positions, 344 reducing their positions, and 90 closing their positions.
New
Increased
Maintained
Reduced
Closed
more first-time investments, than exits
New positions opened: | Existing positions closed:
more call options, than puts
Call options by funds: $ | Put options by funds: $
more funds holding
Funds holding: →
more ownership
Funds ownership: →
2% more repeat investments, than reductions
Existing positions increased: 350 | Existing positions reduced: 344
8% less capital invested
Capital invested by funds: $19.9B → $18.4B (-$1.55B)
33% less funds holding in top 10
Funds holding in top 10: 3 → 2 (-1)
Holders
1,038
Holding in Top 10
2
Calls
$74.8M
Puts
$57.4M
Top Buyers
| 1 | +$148M | |
| 2 | +$117M | |
| 3 | +$82M | |
| 4 |
Morgan Stanley
New York
|
+$74M |
| 5 |
D.E. Shaw & Co
New York
|
+$59.9M |
Top Sellers
| 1 | -$244M | |
| 2 | -$129M | |
| 3 | -$98.8M | |
| 4 |
Neuberger Berman Group
New York
|
-$86.4M |
| 5 |
Marshall Wace
London,
United Kingdom
|
-$84.5M |
