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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 21, 2026 at 9:01 AM EDT

Rank
Symbol
Company Name
May Gain
Market Cap
Price
Country
Sector
301
7.8%
4.61 B
$ 39.24
United States
Industrials
302
7.75%
1.55 B
$ 3.88
Brazil
Basic Materials
303
7.74%
60.46 B
$ 280.89
United States
Energy
304
7.73%
40.14 B
$ 74.39
United States
Financial Services
305
7.72%
1.64 B
$ 55.66
United States
Real Estate
306
7.67%
16.13 B
$ 38.27
Canada
Basic Materials
307
7.66%
2.60 B
$ 24.43
Canada
Basic Materials
308
7.58%
1.95 B
$ 14.41
United States
Energy
309
7.57%
3.35 B
$ 67.75
United States
Energy
310
7.56%
92.84 B
$ 7.59
Japan
Financial Services
311
7.5%
3.63 B
$ 36.48
United States
Energy
312
7.44%
1.60 B
$ 2.49
United Kingdom
Technology
313
7.43%
811.51 B
$ 906.7
United States
Healthcare
314
7.4%
51.29 B
$ 113.26
United States
Consumer Defensive
315
7.4%
17.61 B
$ 200.35
United States
Healthcare
316
7.39%
12.13 B
$ 72.52
United States
Financial Services
317
7.39%
22.24 B
$ 25.36
United States
Financial Services
318
7.35%
8.22 B
$ 99.96
United States
Industrials
319
7.34%
151.62 M
$ 15.98
United States
Financial Services
320
7.32%
27.09 B
$ 253.63
United States
Technology
321
7.27%
10.34 B
$ 124.18
United States
Financial Services
322
7.27%
89.62 B
$ 179.13
Canada
Basic Materials
323
7.24%
112.86 B
$ 181.46
United States
Financial Services
324
7.18%
41.06 B
$ 73.87
United Kingdom
Consumer Defensive
325
7.18%
19.48 B
$ 124.9
United States
Basic Materials
326
7.17%
3.59 B
$ 72.48
United States
Energy
327
7.12%
60.70 B
$ 14.05
Brazil
Basic Materials
328
7.09%
772.86 B
$ 286.56
United States
Financial Services
329
7.08%
4.52 B
$ 97.63
United States
Consumer Cyclical
330
7.06%
17.87 B
$ 33.76
United States
Consumer Cyclical
331
7.05%
8.41 B
$ 13.32
South Africa
Basic Materials
332
7.05%
2.32 B
$ 67.08
Bermuda
Energy
333
7.04%
7.16 B
$ 32.17
Cyprus
Energy
334
7.02%
185.68 B
$ 16.45
Japan
Financial Services
335
7.02%
709.64 M
$ 5.47
United States
Real Estate
336
7%
2.74 B
$ 132.06
United States
Basic Materials
337
6.94%
10.93 B
$ 67.8
United States
Financial Services
338
6.94%
184.12 M
$ 5.2
United States
Technology
339
6.92%
662.28 M
$ 33.42
United States
Financial Services
340
6.84%
6.36 B
$ 4.93
Israel
Basic Materials
341
6.82%
29.33 B
$ 298.99
United States
Healthcare
342
6.82%
24.56 B
$ 15.19
Brazil
Communication Services
343
6.82%
18.58 B
$ 356.9
United States
Industrials
344
6.8%
7.56 B
$ 31.04
United States
Basic Materials
345
6.78%
16.14 B
$ 56.97
United States
Energy
346
6.75%
313.31 M
$ 55.35
United States
Financial Services
347
6.74%
66.49 B
$ 1177.39
United States
Industrials
348
6.74%
36.17 B
$ 100.39
South Korea
Financial Services
349
6.74%
1.86 B
$ 36.17
United States
Communication Services
350
6.7%
14.69 B
$ 52.19
Canada
Consumer Cyclical
351
6.68%
2.74 B
$ 11.84
United States
Real Estate
352
6.67%
90.99 B
$ 410.36
Ireland
Industrials
353
6.62%
53.37 B
$ 205.62
United States
Financial Services
354
6.61%
457.91 M
$ 11.35
Singapore
Financial Services
355
6.58%
116.05 B
$ 36.73
Switzerland
Financial Services
356
6.56%
1.05 B
$ 12.63
United States
Real Estate
357
6.56%
3.38 B
$ 134.99
United States
Financial Services
358
6.53%
24.49 B
$ 57.02
United States
Financial Services
359
6.51%
103.74 B
$ 41.6
Norway
Energy
360
6.49%
6.62 B
$ 77.01
United States
Communication Services
361
6.48%
191.72 M
$ 8.2
United States
Financial Services
362
6.46%
6.27 B
$ 78.81
United States
Industrials
363
6.46%
11.88 B
$ 38.43
United States
Financial Services
364
6.42%
3.95 B
$ 72.31
United States
Financial Services
365
6.41%
13.61 B
$ 106.12
United States
Basic Materials
366
6.41%
57.50 B
$ 168.02
United States
Technology
367
6.41%
183.07 B
$ 195.38
United States
Technology
368
6.4%
366.18 M
$ 48.6
United States
Energy
369
6.38%
113.43 M
$ 0.6563
United States
Consumer Cyclical
370
6.34%
88.45 B
$ 72.41
United States
Energy
371
6.33%
2.12 B
$ 34.63
United States
Financial Services
372
6.26%
53.86 B
$ 13.12
India
Technology
373
6.26%
73.06 B
$ 32.84
United States
Energy
374
6.24%
244.00 B
$ 813.53
United States
Financial Services
375
6.23%
237.38 M
$ 7.48
United States
Real Estate
376
6.23%
148.99 B
$ 957.91
United States
Financial Services
377
6.23%
6.50 B
$ 57.18
United States
Industrials
378
6.2%
18.81 B
$ 116.3
United Kingdom
Industrials
379
6.16%
1.20 B
$ 8.73
Canada
Technology
380
6.16%
584.66 M
$ 4.74
United States
Technology
381
6.14%
1.94 B
$ 35.34
United States
Consumer Defensive
382
6.13%
1.38 B
$ 10.36
Bermuda
Industrials
383
6.1%
71.90 B
$ 263.65
United States
Consumer Cyclical
384
6.09%
2.42 B
$ 33.99
United States
Consumer Cyclical
385
6.09%
31.08 B
$ 85.92
United States
Consumer Defensive
386
6.07%
187.51 M
$ 8.04
United States
Financial Services
387
6.02%
1.89 B
$ 9.3
United States
Real Estate
388
6.01%
11.35 B
$ 185.82
United States
Healthcare
389
6%
1.68 B
$ 2.84
United States
Energy
390
6%
26.37 B
$ 36.65
United States
Basic Materials
391
5.96%
7.45 B
$ 65.33
United States
Basic Materials
392
5.91%
1.11 B
$ 7.01
United States
Basic Materials
393
5.91%
58.97 B
$ 62.25
394
5.89%
792.11 M
$ 6.89
Mexico
Industrials
395
5.89%
35.03 B
$ 105.87
United States
Financial Services
396
5.85%
10.95 B
$ 28.44
South Korea
Communication Services
397
5.84%
29.32 B
$ 120.44
United States
Industrials
398
5.84%
33.41 B
$ 24.12
United States
Consumer Cyclical
399
5.82%
5.27 B
$ 247.96
United States
Industrials
400
5.81%
6.66 B
$ 6.49
United States
Communication Services
For the most accurate results, consider cross-referencing our data with other sources.