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Quest Diagnostics

1,048 hedge funds and large institutions have $18.4B invested in Quest Diagnostics in 2025 Q4 according to their latest regulatory filings, with 148 funds opening new positions, 350 increasing their positions, 345 reducing their positions, and 90 closing their positions.

New
Increased
Maintained
Reduced
Closed

64% more first-time investments, than exits

New positions opened: 148 | Existing positions closed: 90

30% more call options, than puts

Call options by funds: $74.8M | Put options by funds: $57.4M

4% more funds holding

Funds holding: 1,0051,048 (+43)

1.7% more ownership

Funds ownership: 93.86%95.55% (+1.7%)

1% more repeat investments, than reductions

Existing positions increased: 350 | Existing positions reduced: 345

8% less capital invested

Capital invested by funds: $20B → $18.4B (-$1.56B)

33% less funds holding in top 10

Funds holding in top 10: 32 (-1)

Holders
1,048
Holders Change
+43
Holders Change %
+4.28%
% of All Funds
12.75%
Holding in Top 10
2
Holding in Top 10 Change
-1
Holding in Top 10 Change %
-33.33%
% of All Funds
0.02%
New
148
Increased
350
Reduced
345
Closed
90
Calls
$74.8M
Puts
$57.4M
Net Calls
+$17.5M
Net Calls Change
+$31.2M
Name Holding Trade Value Shares
Change
Change in
Stake
Citigroup
51
Citigroup
New York
$53.8M -$1.74M -9,537 -3%
FGP
52
Freestone Grove Partners
California
$53.7M +$56.3M +309,214 New
Swiss National Bank
53
Swiss National Bank
Switzerland
$53.2M -$2.79M -15,300 -5%
Jane Street
54
Jane Street
New York
$50.8M +$40M +219,577 +300%
Sumitomo Mitsui Trust Group
55
Sumitomo Mitsui Trust Group
Japan
$48.1M -$267K -1,469 -0.5%
RhumbLine Advisers
56
RhumbLine Advisers
Massachusetts
$48M +$367K +2,017 +0.7%
QCM
57
Quantinno Capital Management
New York
$46.8M +$13.9M +76,083 +39%
Schroder Investment Management Group
58
Schroder Investment Management Group
United Kingdom
$45.2M -$10.4M -57,065 -18%
ECSS
59
Eurizon Capital SGR SpA
$43.2M +$45.4M +249,182 New
NAMI
60
Nomura Asset Management International
Pennsylvania
$42.7M +$44.8M +246,054 New
Mitsubishi UFJ Asset Management
61
Mitsubishi UFJ Asset Management
Japan
$39.9M +$917K +5,038 +2%
Royal Bank of Canada
62
Royal Bank of Canada
Ontario, Canada
$39.7M -$44.3M -243,498 -52%
BNP Paribas Financial Markets
63
BNP Paribas Financial Markets
France
$39.6M +$1.18M +6,487 +3%
HSBC Holdings
64
HSBC Holdings
United Kingdom
$39.5M +$2.62M +14,361 +7%
BNP Paribas Asset Management
65
BNP Paribas Asset Management
France
$39.1M -$11.1M -60,768 -21%
Bank of Montreal
66
Bank of Montreal
Ontario, Canada
$37.7M +$2.69M +14,782 +7%
Acadian Asset Management
67
Acadian Asset Management
Massachusetts
$33.1M +$34.3M +188,181 +6,735%
BG
68
Bahl & Gaynor
Ohio
$32.5M -$5.36M -29,416 -14%
SG Americas Securities
69
SG Americas Securities
New York
$31.2M +$28.6M +157,031 +694%
VLKIM
70
Van Lanschot Kempen Investment Management
Netherlands
$30.4M -$30.3M -166,507 -49%
CI
71
Conning Inc
Connecticut
$30.1M +$31.5M +173,262 New
AP
72
Antipodes Partners
Australia
$29.8M +$20.1M +110,280 +179%
APG Asset Management
73
APG Asset Management
Netherlands
$29.2M -$2.75M -15,080 -7%
Healthcare of Ontario Pension Plan (HOOPP) Trust Fund
74
Healthcare of Ontario Pension Plan (HOOPP) Trust Fund
Ontario, Canada
$29.2M +$29.9M +163,970 +3,704%
California State Teachers Retirement System (CalSTRS)
75
California State Teachers Retirement System (CalSTRS)
California
$29.2M -$858K -4,711 -3%