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Mackenzie Financial’s
Gossamer Bio
GOSS
Stock Holding History
Mackenzie Financial’s Portfolio
GOSS Stock Details
GOSS Fund Activity
Bought
Maintained
Sold
Quarter
Market Value
Status
Shares
Change in
Stake
Trade Value
Portfolio Weight
Portfolio Position
2026
Q1
$505K
Buy
1,536,923
+1,230,470
+402%
+$1.93M
﹤0.01%
1211
2025
Q4
$954K
Sell
306,453
-2,597
-0.8%
-$7.41K
﹤0.01%
1072
2025
Q3
$813K
Sell
309,050
-244,014
-44%
-$538K
﹤0.01%
1119
2025
Q2
$680K
Buy
553,064
+200,591
+57%
+$219K
﹤0.01%
1120
2025
Q1
$388K
Buy
352,473
+52,658
+18%
+$60.9K
﹤0.01%
1288
2024
Q4
$271K
Buy
299,815
+249,765
+499%
+$214K
﹤0.01%
1428
2024
Q3
$49.4K
Buy
+50,050
New
+$48.1K
﹤0.01%
1537
Other funds holding GOSS
BlackRock
New York
$5.7T AUM
30.48%
1-Year Est. Return
KCM
Kalehua Capital Management
Dallas, Texas
$141M AUM
AQR Capital Management
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$218B AUM
29.41%
1-Year Est. Return
VCM
Vanguard Capital Management
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$4.04T AUM
AVM
Arch Venture Management
Chicago, Illinois
$677M AUM
322.07%
1-Year Est. Return
OCA
Octagon Capital Advisors
New York
$904M AUM
737.04%
1-Year Est. Return
SB
Samsara BioCapital
Palo Alto, California
$1.03B AUM
214.94%
1-Year Est. Return
Balyasny Asset Management
Chicago, Illinois
$50.9B AUM
42.89%
1-Year Est. Return
Acadian Asset Management
Boston, Massachusetts
$70.5B AUM
36%
1-Year Est. Return
SL
Siren LLC
Greenwich, Connecticut
$3.61B AUM
203.3%
1-Year Est. Return
Sign up
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Fund Insights
Common Fund Bets
See what stocks and ETFs funds are collectively bullish/bearish on
Largest Fund Trades
Explore the largest stock and ETF buys and sells made by funds
High Conviction Trades
Discover high conviction trades that caused a significant change in a fund's stake in a stock
Fund Manager Portfolios
Gain insights from the world’s largest funds and super investors
WSR Indexes
Fund Manager Index
Stock index based on fund manager consensus updated each quarter
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