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#1 SIDU leads with +395% December 2025

SIDU (Sidus Space, Inc.) is the best performing stock in December 2025. Following are CAPR (+334%) and VELO (+178%). Top performing sectors: Industrials (+81% avg, 1 in top 10), Healthcare (+66% avg, 6 in top 10), Financial Services (+65% avg, 1 in top 10).

Top Stock Gainers December 2025 - Monthly Performance Ranked

Track the top performing stocks of December 2025 ranked by monthly price gain. See which stock gainers delivered the highest gains this month, with market caps over $100 million on Nasdaq and NYSE.

Best performing large-cap stocks in December 2025

RKLB Rocket Lab Corporation +72.8% $43.19B
SATS EchoStar Corporation +48.9% $30.12B
CFLT Confluent, Inc. +38.27% $11.13B
ASTS AST SpaceMobile, Inc. +38.05% $24.58B
MDB MongoDB, Inc. +27.62% $24.74B
2025

This ranking shows the top performing stocks and biggest stock gainers during December 2025, 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.

December 2025 Stock Market Momentum

This page answers a current-month trend question with data: which NYSE and NASDAQ stocks have shown the strongest price gains so far in December 2025. 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?

Data as of July 22, 2026 at 6:29 PM EDT

Rank
Symbol
Company Name
Dec Gain
Market Cap
Price
Country
Sector
1
394.96%
199.57 M
$ 2.05
United States
Industrials
2
333.98%
1.15 B
$ 19.79
United States
Healthcare
3
178.42%
337.65 M
$ 11.33
United States
Technology
4
154.98%
215.04 M
$ 14.65
United States
Healthcare
5
151.33%
2.54 B
$ 12.9
United States
Healthcare
6
144.27%
256.54 M
$ 2.1
Hong Kong
Financial Services
7
129.42%
1.11 B
$ 5.79
Singapore
Healthcare
8
123.46%
750.15 M
$ 13.1
United States
Healthcare
9
101.27%
1.89 B
$ 20.72
United States
Basic Materials
10
101.19%
3.51 B
$ 49.35
United States
Healthcare
11
99.16%
343.90 M
$ 19.22
United States
Industrials
12
92.97%
785.83 M
$ 79.845
United States
Technology
13
91.58%
350.74 M
$ 7.02
United States
Healthcare
14
88.31%
803.23 M
$ 4.19
United States
Energy
15
87.1%
321.77 M
$ 4.04
United States
Healthcare
16
84.15%
844.07 M
$ 4.37
United States
Technology
17
83.44%
403.99 M
$ 2.24
United States
Healthcare
18
83.41%
117.62 M
$ 7.85
United States
Healthcare
19
80.23%
166.29 M
$ 2.63
United States
Healthcare
20
79.44%
452.96 M
$ 4.51
United States
Communication Services
21
78.75%
339.16 M
$ 8.42
United States
Technology
22
77.43%
689.74 M
$ 9.53
United States
Healthcare
23
75.7%
329.54 M
$ 5.48
United States
Healthcare
24
75.65%
292.98 M
$ 5.77
United States
Consumer Cyclical
25
75.27%
2.35 B
$ 14.64
United States
Industrials
26
72.8%
43.19 B
$ 69.12
United States
Industrials
27
71.74%
504.48 M
$ 10.19
Canada
Industrials
28
70.52%
103.56 M
$ 9
United States
Technology
29
70.31%
1.09 B
$ 20.05
United States
Healthcare
30
70.17%
129.62 M
$ 32.91
United States
Healthcare
31
68.55%
8.23 B
$ 23.1
United States
Industrials
32
62.42%
104.12 M
$ 3.1
United States
Consumer Cyclical
33
60.8%
2.93 B
$ 15.84
United States
Financial Services
34
59.7%
8.86 B
$ 317.87
United States
Healthcare
35
59.47%
314.36 M
$ 17.98
United States
Technology
36
53.91%
1.01 B
$ 11.76
Peru
Basic Materials
37
53.45%
2.67 B
$ 37.17
United States
Healthcare
38
52.42%
203.74 M
$ 2.45
United States
Technology
39
51.6%
3.70 B
$ 56.51
United States
Technology
40
51.45%
688.61 M
$ 7.21
United States
Healthcare
41
50.77%
933.42 M
$ 19.53
United States
Technology
42
50.63%
794.91 M
$ 12.66
United States
Technology
43
49.84%
1.04 B
$ 50.73
United States
Healthcare
44
49.44%
1.70 B
$ 6.1
United States
Industrials
45
49.23%
335.77 M
$ 2.52
United States
Healthcare
46
48.9%
30.12 B
$ 103.915
United States
Communication Services
47
48.88%
172.49 M
$ 11.96
United States
Healthcare
48
48.44%
2.25 B
$ 9.42
United States
Industrials
49
48.15%
1.01 B
$ 22.65
United States
Healthcare
50
47.69%
841.58 M
$ 14.22
France
Healthcare
51
47.21%
342.25 M
$ 15.02
Taiwan
Consumer Defensive
52
47.08%
162.30 M
$ 3.65
United States
Healthcare
53
46.75%
6.12 B
$ 52.95
United States
Healthcare
54
46.08%
473.29 M
$ 174.99
United States
Financial Services
55
45.31%
4.55 B
$ 14.49
United States
Healthcare
56
44.77%
522.59 M
$ 2.39
China
Consumer Defensive
57
44.35%
381.12 M
$ 23
United States
Healthcare
58
44.2%
389.90 M
$ 1.465
United Kingdom
Healthcare
59
43.6%
1.82 B
$ 15.5
United States
Healthcare
60
42.6%
1.85 B
$ 31.34
United States
Technology
61
41.2%
161.92 M
$ 4.32
France
Healthcare
62
41.03%
122.32 M
$ 0.771
United States
Healthcare
63
40.86%
538.92 M
$ 5.68
United States
Healthcare
64
40.39%
348.25 M
$ 8.1
United States
Technology
65
40.2%
266.92 M
$ 22.99
United States
Healthcare
66
40%
2.00 B
$ 11.3
United States
Technology
67
40%
137.59 M
$ 1.17
United States
Financial Services
68
39.67%
454.75 M
$ 7.48
United States
Healthcare
69
39.28%
321.25 M
$ 13.11
United States
Healthcare
70
39.27%
295.86 M
$ 5.72
United States
Real Estate
71
39.23%
3.08 B
$ 27.92
United States
Technology
72
38.95%
172.45 M
$ 4.99
Cyprus
Energy
73
38.67%
1.69 B
$ 17.91
United States
Healthcare
74
38.27%
11.13 B
$ 30.99
United States
Technology
75
38.05%
24.58 B
$ 63.34
United States
Technology
76
37.87%
133.06 M
$ 6.08
United States
Healthcare
77
37.67%
1.16 B
$ 168.27
United States
Healthcare
78
37.61%
630.71 M
$ 3.48
United States
Utilities
79
37.31%
1.44 B
$ 8.37
Canada
Technology
80
37.01%
4.26 B
$ 15
United States
Basic Materials
81
36.67%
350.18 M
$ 2.23
United States
Healthcare
82
36.36%
108.23 M
$ 3.63
United States
Communication Services
83
36.33%
272.95 M
$ 3.77
United States
Industrials
84
36.33%
148.61 M
$ 6.01
Canada
Healthcare
85
35.83%
255.98 M
$ 7.81
United States
Industrials
86
35.71%
1.78 B
$ 6.82
United States
Healthcare
87
35.37%
117.08 M
$ 3.84
United States
Consumer Cyclical
88
35.04%
1.03 B
$ 56.82
Australia
Basic Materials
89
34.64%
782.05 M
$ 25.67
United States
Financial Services
90
34.56%
117.26 M
$ 3.53
United States
Healthcare
91
34.4%
416.98 M
$ 15.72
United States
Healthcare
92
34.28%
108.55 M
$ 8.38
United States
Technology
93
34.07%
307.66 M
$ 14.69
United States
Industrials
94
33.23%
290.94 M
$ 4.43
Germany
Industrials
95
32.79%
3.83 B
$ 30.05
United States
Healthcare
96
32.73%
1.52 B
$ 20.84
United States
Real Estate
97
32.64%
997.51 M
$ 5.04
United States
Communication Services
98
32.59%
4.43 B
$ 44.8
United States
Basic Materials
99
32.01%
199.37 M
$ 7.16
Singapore
Industrials
100
31.68%
1.64 B
$ 12.18
United Kingdom
Healthcare
For the most accurate results, consider cross-referencing our data with other sources.

Frequently Asked Questions

Q Which stock has gained the most in December 2025?
A

SIDU (Sidus Space, Inc.) has the highest monthly gain in this ranking for December 2025, with a gain of 395%. Top performers this month include SIDU, CAPR, VELO.

Q What stocks gained the most in December 2025?
A

The biggest gainers in December 2025 were: SIDU (+395%), CAPR (+334%), VELO (+178%), GLSI (+155%), SLS (+151%). 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 December 2025. 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 December 2025. 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 sectors performed best in December 2025?
A

The top performing sectors in December 2025 included Industrials, Healthcare, Technology, based on the stocks with highest monthly gains. SIDU led the Industrials 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 December 2025. 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 market activity across NYSE and NASDAQ.

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.