SEC 13F filings
Which institutions changed their stock positions?
13F filings show what large institutions reported holding at quarter end. WhenBuy groups those records into new, increased, reduced, sold, and unchanged positions, then applies simple public-data return calculations.
Quarter
2026 Q1
Holding rows
3,000
Institutions
23
Tickers
2,071
Institution ranking
Top institution returns
#1
Royal Bank of Canada
+23.1%
Rows
2
Best
AGEM
Worst
AGD
#2
Citadel Advisors LLC
+17.4%
Rows
1
Best
AGEM
Worst
AGEM
#3
Janus Henderson Group PLC
+12.4%
Rows
2,396
Best
RXT
Worst
CVNA
#4
Balyasny Asset Management L.P.
+11.7%
Rows
2
Best
AGCO
Worst
AGCO
#5
Moore Capital Management, LP
+11.7%
Rows
1
Best
AGCO
Worst
AGCO
#6
Ameriprise Financial Inc
+10.5%
Rows
1
Best
AGD
Worst
AGD
#7
Point72 Asset Management, L.P.
+9.8%
Rows
193
Best
INOD
Worst
SHAK
#8
D. E. Shaw & Co., Inc.
+7.8%
Rows
318
Best
INOD
Worst
CSHR
#9
Bank of America Corp.
+5.5%
Rows
2
Best
AGD
Worst
AGCO
Stock highlights
Best single holding rows
RXT
RACKSPACE TECHNOLOGY INC
+339.9%
Janus Henderson Group PLC · May 18, 2026
Filing price $0.9798 · Current $4.31
MXL
MAXLINEAR INC
+328.2%
Janus Henderson Group PLC · May 18, 2026
Filing price $17.395 · Current $74.48
PENG
PENGUIN SOLUTIONS INC
+274.5%
Janus Henderson Group PLC · May 18, 2026
Filing price $17.60 · Current $65.91
ALAB
ASTERA LABS INC
+271.3%
Janus Henderson Group PLC · May 18, 2026
Filing price $109.46 · Current $406.42
SNDK
SANDISK CORP
+257.9%
Janus Henderson Group PLC · May 18, 2026
Filing price $635.22 · Current $2,273.73
MRVL
MARVELL TECHNOLOGY INC
+173.7%
Janus Henderson Group PLC · May 18, 2026
Filing price $98.9404 · Current $270.79
NVTS
NAVITAS SEMICONDUCTOR CORP
+165.3%
Janus Henderson Group PLC · May 18, 2026
Filing price $8.765 · Current $23.255
HPP
HUDSON PACIFIC PROPERTIES IN
+162.9%
Janus Henderson Group PLC · May 18, 2026
Filing price $5.91 · Current $15.535
INOD
INNODATA INC
+157.5%
Point72 Asset Management, L.P. · May 15, 2026
Filing price $38.62 · Current $99.455