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Top Stock Gainers May 2021 - Monthly Performance Ranked

Discover the best stocks of May 2021 ranked by monthly performance. Find out which public companies delivered the highest returns this month, with market caps over $100 million on Nasdaq and NYSE.
2021

This ranking shows the best performing stocks during May 2021, calculated from the first to the last trading day of the month. Using split-adjusted data ensures accurate performance calculations.

Monthly performance rankings help identify short-term momentum and sector rotation patterns that may not be visible in longer timeframes. These rapid movers often present opportunities for traders and momentum investors.

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Data as of March 19, 2026 at 9:59 AM EDT

Rank
Symbol
Company Name
May Gain
Market Cap
Price
Country
Sector
101
15.95%
1.59 B
$ 6.71
United States
Technology
102
15.9%
4.48 B
$ 113.91
United States
Technology
103
15.87%
2.85 B
$ 19.02
United States
Basic Materials
104
15.82%
3.40 B
$ 24.66
France
Basic Materials
105
15.59%
18.83 B
$ 6.5
Netherlands
Consumer Cyclical
106
15.37%
1.17 B
$ 4.77
United Kingdom
Communication Services
107
15.36%
439.98 M
$ 5.13
United States
Communication Services
108
15.29%
25.72 B
$ 324.04
Peru
Financial Services
109
15.22%
1.37 B
$ 9.09
United States
Healthcare
110
15.21%
1.18 B
$ 47.25
United States
Communication Services
111
14.98%
23.98 B
$ 48.89
Canada
Basic Materials
112
14.97%
942.39 M
$ 299.99
United States
Consumer Cyclical
113
14.77%
3.55 B
$ 68.56
Monaco
Energy
114
14.74%
1.95 B
$ 40.87
Cayman Islands
Consumer Defensive
115
14.72%
64.20 B
$ 18.66
United States
Energy
116
14.59%
5.20 B
$ 101.54
United States
Energy
117
14.54%
10.82 B
$ 58.8
Brazil
Industrials
118
14.5%
216.18 M
$ 4.41
United States
Real Estate
119
14.45%
4.67 B
$ 85.23
Argentina
Industrials
120
14.31%
1.56 B
$ 15.12
United States
Consumer Defensive
121
14.3%
1.57 B
$ 14.4
United States
Energy
122
14.26%
1.35 B
$ 10.24
Argentina
Basic Materials
123
14.26%
1.26 B
$ 14.84
United States
Energy
124
14.13%
5.05 B
$ 18.73
United States
Real Estate
125
14.11%
8.22 B
$ 39.46
United States
Energy
126
13.99%
116.26 B
$ 106.54
United States
Basic Materials
127
13.96%
1.35 B
$ 40.84
United States
Basic Materials
128
13.9%
37.31 B
$ 3.53
Brazil
Financial Services
129
13.8%
1.37 B
$ 38.37
Greece
Industrials
130
13.77%
469.20 M
$ 37.33
United States
Energy
131
13.7%
250.45 M
$ 4.61
United Kingdom
Technology
132
13.69%
1.93 B
$ 13.63
Luxembourg
Consumer Defensive
133
13.53%
345.55 M
$ 7.18
United States
Consumer Defensive
134
13.43%
17.11 B
$ 190.21
United States
Consumer Cyclical
135
13.38%
6.15 B
$ 41.74
United States
Consumer Cyclical
136
13.35%
3.55 B
$ 67.93
United States
Basic Materials
137
13.25%
1.53 B
$ 5.88
China
Financial Services
138
13.17%
6.89 B
$ 6.25
Switzerland
Energy
139
13.16%
284.84 M
$ 2.46
Greece
Industrials
140
13.14%
12.34 B
$ 24.83
United States
Healthcare
141
13.13%
5.69 B
$ 30.16
United States
Energy
142
13.09%
1.58 B
$ 9.8
United States
Industrials
143
13.05%
12.34 B
$ 23.67
United States
Financial Services
144
13.04%
6.96 B
$ 36.86
Canada
Basic Materials
145
13.02%
144.72 M
$ 7.95
United States
Technology
146
12.88%
1.54 B
$ 21.48
United States
Technology
147
12.85%
88.77 B
$ 96.45
Canada
Financial Services
148
12.77%
186.82 M
$ 5.79
United States
Industrials
149
12.65%
9.69 B
$ 138.89
United States
Financial Services
150
12.64%
760.60 M
$ 8.09
Argentina
Financial Services
151
12.62%
2.03 B
$ 11.66
United States
Technology
152
12.53%
6.66 B
$ 12.45
United States
Technology
153
12.53%
5.91 B
$ 3.69
United States
Financial Services
154
12.5%
2.92 B
$ 60.75
United States
Healthcare
155
12.45%
12.56 B
$ 10.12
United Kingdom
Industrials
156
12.45%
29.87 B
$ 48.16
United States
Energy
157
12.43%
88.83 B
$ 8.06
Brazil
Financial Services
158
12.36%
405.92 M
$ 19.08
United States
Financial Services
159
12.33%
2.02 B
$ 26.01
United States
Industrials
160
12.33%
4.20 B
$ 75.13
United States
Consumer Cyclical
161
12.21%
1.24 B
$ 20.87
Canada
Basic Materials
162
12.03%
6.53 B
$ 9.31
Brazil
Utilities
163
11.97%
6.87 B
$ 34.6
Canada
Basic Materials
164
11.93%
126.93 M
$ 1.25
China
Consumer Cyclical
165
11.84%
3.19 B
$ 46.26
United States
Energy
166
11.67%
3.44 B
$ 11.74
Canada
Basic Materials
167
11.52%
1.30 B
$ 4.28
Canada
Basic Materials
168
11.51%
75.15 B
$ 5.11
United Kingdom
Financial Services
169
11.43%
970.86 M
$ 20.83
United States
Energy
170
11.42%
58.53 B
$ 128.75
Canada
Basic Materials
171
11.34%
97.46 B
$ 138
Canada
Financial Services
172
11.26%
92.90 B
$ 73.02
United States
Healthcare
173
11.2%
336.77 M
$ 4.88
174
11.16%
1.44 B
$ 11.55
United States
Energy
175
11.15%
19.38 B
$ 144.62
United States
Industrials
176
11.15%
3.86 B
$ 30.49
United States
Consumer Cyclical
177
11.13%
10.04 B
$ 20.35
Canada
Basic Materials
178
11.11%
9.63 B
$ 84.93
United States
Healthcare
179
11.06%
37.67 B
$ 77.88
Canada
Basic Materials
180
11.04%
631.92 M
$ 4.31
United States
Communication Services
181
11.02%
228.38 M
$ 4.9
United States
Energy
182
11.02%
68.03 B
$ 45.32
United States
Energy
183
10.98%
1.62 B
$ 7.7
Uruguay
Consumer Cyclical
184
10.95%
4.04 B
$ 13.56
United States
Healthcare
185
10.9%
2.06 B
$ 17.39
United States
Consumer Defensive
186
10.79%
3.53 B
$ 24.64
United States
Technology
187
10.77%
97.38 B
$ 241.93
United States
Industrials
188
10.72%
173.51 M
$ 2.27
United States
Healthcare
189
10.72%
18.24 B
$ 18.77
China
Consumer Cyclical
190
10.65%
244.81 M
$ 0.5901
United States
Healthcare
191
10.62%
737.26 M
$ 5.02
United States
Real Estate
192
10.54%
551.55 M
$ 27.68
United States
Industrials
193
10.53%
7.91 B
$ 51.36
United Kingdom
Financial Services
194
10.5%
161.42 B
$ 11.06
Spain
Financial Services
195
10.49%
4.67 B
$ 8.18
United States
Basic Materials
196
10.46%
117.95 B
$ 20.77
Spain
Financial Services
197
10.43%
1.04 B
$ 52.2
United States
Financial Services
198
10.38%
5.16 B
$ 35.55
United States
Technology
199
10.37%
88.20 B
$ 39.25
Canada
Financial Services
200
10.36%
102.42 B
$ 49.1
Canada
Energy
For the most accurate results, consider cross-referencing our data with other sources.