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Top Stock Gainers May 2026 - Monthly Performance Ranked

The top US-listed stocks of May 2026 by monthly gain, on split-adjusted closes. Ranks 3,852 companies above $100M on NYSE, Nasdaq and NYSE American.

Looking for intraday moves instead? Today's stock movers ranks the current session's alert board, so it measures against whichever session is running rather than covering a fixed window.

2026
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

May 2026 ranking, complete through May 29, 2026

The gain covers the period; price, market cap, sector and country show each company as it is today.

Swipe or scroll the table sideways for more columns.

Rank
Symbol
Company Name
May Gain
Market Cap (today)
Price (today)
Country
Sector
1
QUCY
Quantum Cyber N.V.
+523.48%
$109.29M
$1.30
Germany
Healthcare
2
PIII
P3 HEALTH PARTNERS INC
+315.70%
$2.06B
$10.31
United States
Healthcare
3
AIIO
Robo.ai Inc
+284.55%
$468.31M
$2.77
United Arab Emirates
Consumer Cyclical
4
REPL
Replimune Group
+247.60%
$1.39B
$14.77
United States
Healthcare
5
HYLN
Hyliion Holdings Corporation
+242.65%
$594.73M
$3.33
United States
Consumer Cyclical
6
AGL
Agilon Health Inc
+211.97%
$1.62B
$96.58
United States
Healthcare
7
RXT
Rackspace Technology, Inc.
+192.09%
$846.18M
$3.32
United States
Technology
8
OTLK
Outlook Therapeutics Inc
+178.41%
$157.06M
$0.6472
United States
Healthcare
9
RDW
Redwire Corporation
+163.06%
$3.00B
$12.02
United States
Industrials
10
APPS
Digital Turbine Inc
+138.59%
$1.32B
$10.87
United States
Technology
11
INOD
Innodata
+138.48%
$2.21B
$64.21
United States
Technology
12
EVC
Entravision Communications Cp
+137.08%
$744.77M
$8.07
United States
Communication Services
13
SPCE
Virgin Galactic Holdings Inc
+133.21%
$466.92M
$3.08
United States
Industrials
14
UMAC
Unusual Machines
+123.96%
$1.37B
$27.43
United States
Technology
15
QTTB
Q32 BIO INC
+119.25%
$475.42M
$15.97
United States
Healthcare
16
AMPG
Amplitech Group Inc
+115.61%
$103.95M
$3.46
United States
Technology
17
GCTS
GCT Semiconductor Holding, ...
+111.95%
$187.62M
$2.04
United States
Technology
18
DGXX
Digi Power X Inc
+107.71%
$412.68M
$4.07
United States
Utilities
19
TE
T1 Energy
+105.05%
$1.30B
$4.42
United States
Industrials
20
ENPH
Enphase Energy
+101.95%
$5.10B
$38.61
United States
Technology
21
HCHL
HAPPY CITY HLDGS LTD
+100.99%
$118.18M
$3.96
Hong Kong
Consumer Cyclical
22
DELL
Dell Technologies
+100.27%
$285.65B
$442.08
United States
Technology
23
PSNL
Personalis
+97.23%
$1.96B
$18.38
United States
Healthcare
24
VIVO
Vivopower International Plc
+95.61%
$133.96M
$4.36
United Kingdom
Technology
25
OABI
OmniAb, Inc.
+92.86%
$629.54M
$4.33
United States
Healthcare
26
DMRC
Digimarc Corporation
+90.41%
$138.22M
$6.15
United States
Technology
27
SLS
Sellas Life Sciences Group Inc
+88.84%
$3.12B
$15.46
United States
Healthcare
28
TONX
TON Strategy
+87.74%
$168.52M
$3.06
United States
Technology
29
VOYG
Voyager Technologies, Inc.
+86.20%
$2.33B
$38.40
United States
Industrials
30
BLZE
Backblaze, Inc.
+86.07%
$978.02M
$15.80
United States
Technology
31
TMCI
Treace Medical Concepts, Inc.
+86.02%
$282.25M
$4.34
United States
Healthcare
32
HIVE
HIVE Digital Technologies Ltd
+86.01%
$831.06M
$3.03
United States
Financial Services
33
FATE
Fate Therapeutic
+85.62%
$279.18M
$2.33
United States
Healthcare
34
BLDP
Ballard Power
+85.55%
$723.62M
$2.40
Canada
Industrials
35
LIXT
Lixte Biotechnology Hldgs Inc
+85.46%
$125.36M
$7.21
United States
Industrials
36
KEEL
Keel Infrastructure Corp
+83.82%
$2.05B
$3.32
United States
Technology
37
RKLB
Rocket Lab Usa Inc
+82.06%
$46.40B
$72.57
United States
Industrials
38
OSS
One Stop Sys Inc
+81.26%
$282.37M
$11.40
United States
Technology
39
SNOW
Snowflake Inc
+81.24%
$115.34B
$332.78
United States
Technology
40
SHAZ
SharonAI
+79.65%
$2.11B
$59.07
United States
Technology
41
PENG
Penguin Solutions Inc
+78.71%
$2.70B
$52.62
United States
Technology
42
WYFI
WHITEFIBER INC
+78.62%
$804.93M
$20.72
United States
Technology
43
KULR
Kulr Technology
+78.36%
$118.48M
$2.56
United States
Technology
44
SEDG
Solaredge Technologies Inc
+77.93%
$1.90B
$30.83
Israel
Technology
45
VELO
Velo3D Inc
+77.72%
$427.42M
$13.29
United States
Technology
46
XMTR
Xometry, Inc.
+77.55%
$4.79B
$83.59
United States
Industrials
47
DDOG
Datadog, Inc.
+76.01%
$84.61B
$235.62
United States
Technology
48
VSH
Vishay Intertech
+75.96%
$4.85B
$31.63
United States
Technology
49
CRSR
Corsair Gaming, Inc.
+74.43%
$1.18B
$10.93
United States
Technology
50
OUST
Ouster Inc
+74.10%
$2.77B
$38.42
United States
Technology
51
BRAI
Braiin Limited
+73.07%
$1.12B
$5.44
Australia
Technology
52
UIS
Unisys
+72.56%
$199.79M
$2.74
United States
Technology
53
JLHL
JULONG HOLDING LTD
+71.09%
$141.56M
$6.60
China
Industrials
54
LUNR
Intuitive Machines Inc
+71.08%
$2.94B
$18.32
United States
Industrials
55
AEVA
Aeva Technologies Inc
+71.00%
$1.27B
$18.29
United States
Technology
56
SMCI
Super Micro Computer Inc
+70.14%
$24.09B
$37.24
United States
Technology
57
UMC
United Microelec
+69.96%
$46.00B
$18.34
Taiwan
Technology
58
COOK
Traeger Inc
+69.91%
$155.16M
$55.45
United States
Consumer Cyclical
59
ALAB
Astera Labs
+69.16%
$49.44B
$284.97
United States
Technology
60
POET
Poet Technologies Inc
+68.13%
$1.43B
$8.25
Canada
Technology
61
BTQ
Btq Technologies Corp
+67.36%
$517.72M
$3.52
Canada
Technology
62
ARM
Arm Holdings
+67.29%
$259.87B
$243.32
United Kingdom
Technology
63
HIMX
Himax Technologi
+67.10%
$2.41B
$13.79
Taiwan
Technology
64
BB
Blackberry
+66.05%
$4.71B
$8.04
Canada
Technology
65
ACMR
Acm Research
+65.98%
$5.53B
$79.41
United States
Technology
66
FLEX
Flex Ltd
+64.43%
$40.80B
$110.45
United States
Technology
67
AIFU
AIFU Inc.
+62.86%
$109.62M
$18.50
China
Financial Services
68
XGN
Exagen Inc.
+62.75%
$191.86M
$7.92
United States
Healthcare
69
FCEL
Fuelcell Energy
+62.73%
$1.56B
$19.54
United States
Industrials
70
OKTA
Okta Inc
+62.67%
$23.49B
$135.14
United States
Technology
71
BRUN
BOOST RUN INC
+62.37%†
$1.20B
$19.51
United States
Technology
72
LQDA
Liquidia Corporation
+62.19%
$6.14B
$68.62
United States
Healthcare
73
HUT
Hut 8 Mining
+62.16%
$9.97B
$80.86
United States
Financial Services
74
AIRS
Airsculpt Technologies, Inc.
+62.05%
$197.54M
$2.74
United States
Healthcare
75
VUZI
Vuzix
+61.97%
$248.18M
$2.94
United States
Technology
76
STRL
Sterling Infra
+61.61%
$15.81B
$516.81
United States
Industrials
77
WOLF
Wolfspeed Inc
+61.26%
$1.34B
$25.76
United States
Technology
78
AMWL
American Well Corp
+60.62%
$202.40M
$11.90
United States
Healthcare
79
CLFD
Clearfield
+60.45%
$374.10M
$27.54
United States
Technology
80
CRWD
Crowdstrike Holdings
+60.43%
$195.45B
$191.95
United States
Technology
81
BRKR
Bruker Corp
+60.07%
$9.07B
$59.56
United States
Healthcare
82
ASTS
Ast Spacemobile Inc
+59.98%
$26.72B
$68.65
United States
Technology
83
FTNT
Fortinet
+59.89%
$112.63B
$153.51
United States
Technology
84
CD
Chaince Digital Holdings Inc
+59.81%
$394.91M
$3.59
United States
Financial Services
85
PURR
Hyperliquid Strategies Inc
+59.33%
$2.12B
$10.58
United States
Financial Services
86
FROG
Jfrog Ltd
+59.31%
$11.36B
$92.13
United States
Technology
87
TKNO
Alpha Teknova
+58.82%
$395.15M
$7.36
United States
Healthcare
88
PCT
Purecycle Technologies Inc
+57.63%
$1.37B
$6.80
United States
Industrials
89
GBTG
Global Business Travel Grou...
+57.50%
$4.94B
$9.45
United Kingdom
Consumer Cyclical
90
UP
Wheels Up Experience Inc
+57.50%
$179.54M
$4.95
United States
Industrials
91
SAIL
SailPoint Parent, LP
+56.01%
$10.57B
$18.64
United States
Technology
92
IONQ
Ionq Inc
+56.00%
$18.17B
$44.86
United States
Technology
93
WW
WW International Inc
+55.76%
$157.08M
$15.71
United States
Healthcare
94
PANW
Palo Alto Networks, Inc.
+55.56%
$291.66B
$357.87
United States
Technology
95
NTAP
Netapp Inc
+55.50%
$37.73B
$192.27
United States
Technology
96
IMUX
Immunic Inc
+55.03%
$225.13M
$16.50
United States
Healthcare
97
FLNC
Fluence Energy, Inc.
+54.88%
$2.11B
$11.34
United States
Utilities
98
IMOS
Chipmos Technolo
+54.08%
$1.88B
$54.03
Taiwan
Technology
99
SWMR
SWARMER INC
+52.58%
$506.60M
$42.49
United States
Technology
100
SHLS
Shoals Technologies Group, ...
+52.57%
$1.19B
$7.09
United States
Technology
Top gain on this page +523.48% QUCY
Rows on this page 100 ranks 1–100
Page 1 of 39
Period May 2026 closed

Best performing large-cap stocks in May 2026

DELL Dell Technologies Inc. +100.27% $285.65B
RKLB Rocket Lab Corporation +82.06% $46.40B
SNOW Snowflake Inc. +81.24% $115.34B
DDOG Datadog, Inc. +76.01% $84.61B
SMCI Super Micro Computer, Inc. +70.14% $24.09B

May 2026 Stock Market Momentum

This page answers a current-month trend question with data: which US-listed stocks have shown the strongest price gains so far in May 2026. The ranking is based on observed market performance, not analyst ratings, price targets, or investment recommendations.

Use the list to research momentum, market breadth, sector strength, and catalysts behind large moves. Before acting on any stock, review the company's news, SEC filings, liquidity, volatility, and your own risk constraints.

Looking for a specific Symbol?
#1 QUCY leads with +523% May 2026

Among the 3,852 NYSE, Nasdaq and NYSE American stocks currently eligible for this ranking, QUCY (Quantum Cyber N.V.) has the highest gain in May 2026 with +523%. Following are PIII (+316%) and AIIO (+285%). Top performing sectors: Consumer Cyclical (+151% avg, 2 in top 10), Communication Services (+137% avg), Healthcare (+133% avg, 5 in top 10).

MARKET LEADERS
52-WEEK LEADER
SNDK +3053%
SanDisk Corp
2026 YTD LEADER
MGRT +1211%
Mega Fortune Company L..
MAY 2026 LEADER
QUCY +523%
Quantum Cyber N.V.
52-Week Top 5 Full List →
1 SNDK +3053.4% 2 MGRT +2692.0% 3 AXTI +2261.0% 4 ERAS +1000.0% 5 NUAI +884.7%
2026 YTD Top 5 Full List →
1 MGRT +1210.7% 2 ANL +926.1% 3 ROMA +458.4% 4 AGL +456.9% 5 SNDK +442.5%
May 2026 Top 5 Full List →
1 QUCY +523.5% 2 PIII +315.7% 3 AIIO +284.6% 4 REPL +247.6% 5 HYLN +242.7%
Quick Access: 52-Week 2026 YTD May 2026 Market Cap Dividends

This ranking shows the top performing stocks and biggest stock gainers during May 2026, calculated from the first to the last trading day of the month. It shows which stocks are going up this month, with split-adjusted data used for consistent performance calculations.

Monthly performance rankings can reveal price strength, sustained momentum, sector rotation, and event-driven moves that are not visible in one-day movers lists. The table is informational only and does not recommend any stock to buy, sell, or hold.

† Return measured from the start of the stock's current trading history (a recent listing or relisting), not from the start of the month.
Gains are computed on split-adjusted closes, so a split inside the month does not read as a move. This ranking is informational and is not investment advice.

Frequently Asked Questions

Q Which stock has gained the most in May 2026?
A

QUCY (Quantum Cyber N.V.) has the highest monthly gain in this ranking for May 2026, with a gain of 523%. Top performers this month include QUCY, PIII, AIIO.

Q What stocks gained the most in May 2026?
A

The biggest gainers in May 2026 were: QUCY (+523%), PIII (+316%), AIIO (+285%), REPL (+248%), HYLN (+243%). These monthly rankings show which stocks had the strongest short-term momentum.

Q Does this page recommend the best stocks to buy now?
A

No. This page is an informational ranking of stocks that have already gone up during May 2026. It does not make buy, sell, or hold recommendations and should be used as a research starting point, not financial advice.

Q How can this ranking help explain current stock market trends?
A

The ranking shows where price strength is concentrated during May 2026. Comparing the top gainers by sector, market cap, and recent catalysts can help identify momentum themes and market rotation without implying that any listed stock is a recommendation.

Q Which companies does this ranking include?
A

3,852 companies with a market capitalization above $100 million traded on NYSE, Nasdaq and NYSE American, each with at least one trading day inside May 2026. One close inside the month is enough to qualify, so a company that listed during the month is ranked on the part of it that it traded.

Q Which sectors performed best in May 2026?
A

The top performing sectors in May 2026 included Healthcare, Consumer Cyclical, based on the stocks with highest monthly gains. QUCY led the Healthcare sector.

Q How is monthly stock performance calculated?
A

Monthly stock performance is calculated by comparing the closing price on the last trading day of the month to the opening price on the first trading day. Split-adjusted prices ensure accuracy.

Q Where can I find today's top stock gainers and most active stocks?
A

This page ranks stocks by their full-month performance in May 2026. For today's top stock gainers, real-time stock movers, and the most active stocks right now, visit our Momentum Scanner, which tracks live intraday activity across US-listed symbols.

Understanding Monthly Stock Performance

Monthly performance rankings reveal short-term momentum patterns and help identify stocks experiencing rapid price movements:

  • Momentum Research: Stocks showing strong monthly performance can help identify where market attention and price strength are concentrated.
  • Sector Rotation: Monthly rankings can reveal which sectors are gaining favor with investors and where market leadership is shifting.
  • Event-Driven Moves: Earnings releases, product launches, and regulatory approvals often create significant monthly price movements.

Using Monthly Data Effectively

  • Combine Timeframes: Compare monthly gainers with 52-week and YTD performance to identify stocks with both short and long-term momentum.
  • Research the Catalyst: Investigate why top monthly performers moved significantly. The reason for the move matters as much as the percentage gain.
  • Watch for Reversals: Extreme monthly gains sometimes precede corrections, so treat the ranking as a research starting point rather than a buy list.

Evaluate Your Positions

Researching one of this month's top movers? Use our Stock Return Calculator to review historical performance, or the Position Size Calculator to model position sizing and risk before making your own decision.