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#1 OTLK leads with +168% October 2023

OTLK (Outlook Therapeutics, Inc.) is the best performing stock in October 2023. Following are MTC (+130%) and IBRX (+105%). Top performing sectors: Technology (+43% avg, 3 in top 10), Healthcare (+39% avg, 6 in top 10), Utilities (+36% avg).

Top Stock Gainers October 2023 - Monthly Performance Ranked

Track the top performing stocks of October 2023 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 October 2023

MSTR Strategy Inc +28.5% $34.39B
GFI Gold Fields Limited +25.19% $28.61B
CYTK Cytokinetics, Incorporated +25.04% $10.89B
CDE Coeur Mining, Inc. +21.84% $14.79B
AR Antero Resources Corporation +21.7% $10.40B
2023

This ranking shows the top performing stocks and biggest stock gainers during October 2023, 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.

October 2023 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 October 2023. 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 19, 2026 at 8:20 PM EDT

Rank
Symbol
Company Name
Oct Gain
Market Cap
Price
Country
Sector
1
168.22%
206.54 M
$ 1.39
United States
Healthcare
2
129.74%
249.97 M
$ 2.51
Hong Kong
Technology
3
105.23%
8.04 B
$ 7.68
United States
Healthcare
4
97.63%
151.86 M
$ 5.06
United States
Technology
5
97.59%
121.92 M
$ 1.82
Canada
Healthcare
6
80.37%
6.33 B
$ 52.86
United States
Healthcare
7
72.79%
114.26 M
$ 2.05
United States
Technology
8
62.89%
122.67 M
$ 4.08
United States
Communication Services
9
54.96%
186.02 M
$ 2.6
United States
Healthcare
10
51.5%
270.68 M
$ 3.54
United States
Healthcare
11
49.69%
282.58 M
$ 2.1
United States
Healthcare
12
47.86%
142.19 M
$ 0.6944
United States
Consumer Cyclical
13
46.23%
262.53 M
$ 2.26
United States
Industrials
14
45.85%
492.47 M
$ 5.87
Switzerland
Healthcare
15
45.17%
149.85 M
$ 2.38
United States
Healthcare
16
43.33%
1.22 B
$ 47.6
United States
Healthcare
17
41.96%
119.15 M
$ 11.01
United States
Consumer Cyclical
18
40.85%
375.71 M
$ 8.05
United States
Healthcare
19
38.83%
406.69 M
$ 29.44
United States
Energy
20
36.86%
7.21 B
$ 9.08
Canada
Basic Materials
21
36.08%
369.39 M
$ 13.99
United States
Utilities
22
35.46%
534.91 M
$ 5.35
United States
Healthcare
23
34.45%
710.16 M
$ 40.17
United States
Healthcare
24
34.39%
623.01 M
$ 45
United States
Financial Services
25
34.2%
4.61 B
$ 39.24
United States
Industrials
26
31.27%
3.45 B
$ 48.48
United States
Healthcare
27
31.1%
7.18 B
$ 17.56
United States
Technology
28
31.04%
1.73 B
$ 1.94
United States
Communication Services
29
31.02%
5.25 B
$ 41.03
United States
Healthcare
30
29.73%
3.00 B
$ 106.68
United States
Technology
31
29.36%
383.25 M
$ 1.44
United Kingdom
Healthcare
32
29.31%
763.36 M
$ 14.12
United States
Communication Services
33
28.73%
797.42 M
$ 10.42
United States
Real Estate
34
28.5%
34.39 B
$ 94.85
United States
Technology
35
28.23%
7.28 B
$ 27.95
Canada
Basic Materials
36
27.8%
963.93 M
$ 16.78
United States
Communication Services
37
27.62%
1.57 B
$ 63.16
United States
Communication Services
38
26.84%
9.25 B
$ 14.65
South Africa
Basic Materials
39
26.42%
6.02 B
$ 150.08
United States
Healthcare
40
25.95%
686.95 M
$ 41.56
United States
Financial Services
41
25.74%
8.17 B
$ 14.14
Canada
Basic Materials
42
25.54%
112.46 M
$ 10.94
United States
Communication Services
43
25.49%
620.20 M
$ 4.26
United States
Basic Materials
44
25.26%
328.21 M
$ 75.95
United States
Technology
45
25.19%
28.61 B
$ 31.99
South Africa
Basic Materials
46
25.06%
2.43 B
$ 70.07
Bermuda
Energy
47
25.04%
10.89 B
$ 80.18
United States
Healthcare
48
24.86%
140.72 M
$ 22.5
United States
Industrials
49
23.96%
8.12 B
$ 36.49
Cyprus
Energy
50
23.55%
487.88 M
$ 3.875
United States
Basic Materials
51
23.27%
197.15 M
$ 7.16
United States
Healthcare
52
23.26%
158.69 M
$ 1.18
United States
Industrials
53
23.23%
4.21 B
$ 138.37
United States
Technology
54
22.83%
3.71 B
$ 87.32
United States
Consumer Defensive
55
22.68%
4.59 B
$ 9.28
United States
Energy
56
22.49%
117.20 M
$ 25.4
United States
Financial Services
57
22.3%
406.16 M
$ 1.39
United Arab Emirates
Consumer Cyclical
58
22.19%
925.36 M
$ 26.16
United States
Communication Services
59
21.85%
2.65 B
$ 78.31
United States
Financial Services
60
21.84%
14.79 B
$ 14.35
United States
Basic Materials
61
21.7%
10.40 B
$ 33.57
United States
Energy
62
21.57%
1.06 B
$ 2.39
United States
Healthcare
63
21.33%
9.64 B
$ 38.49
United States
Communication Services
64
21.24%
497.33 M
$ 9.73
China
Consumer Defensive
65
21.23%
191.98 M
$ 12
United States
Industrials
66
21.14%
3.58 B
$ 98.54
United States
Consumer Defensive
67
21.03%
106.50 M
$ 4.54
United States
Healthcare
68
20.58%
550.96 M
$ 6.69
United States
Technology
69
20.53%
7.33 B
$ 20.35
United States
Consumer Cyclical
70
20.47%
8.37 B
$ 129.46
United States
Healthcare
71
20.25%
578.81 M
$ 6.46
United States
Financial Services
72
20.19%
242.69 M
$ 8.26
United States
Healthcare
73
19.94%
114.97 M
$ 2.38
United States
Healthcare
74
19.78%
609.30 M
$ 9.26
United States
Communication Services
75
19.69%
6.65 B
$ 19.17
United States
Healthcare
76
19.5%
26.95 B
$ 22.57
Canada
Basic Materials
77
19.39%
4.90 B
$ 162.55
United States
Industrials
78
19.01%
558.48 M
$ 4.17
United States
Basic Materials
79
18.98%
3.92 B
$ 13.34
United States
Energy
80
18.75%
439.05 M
$ 12.78
United States
Healthcare
81
18.07%
330.59 M
$ 3.91
United States
Technology
82
18.04%
2.37 B
$ 5.37
Brazil
Financial Services
83
17.82%
1.90 B
$ 14.61
United States
Healthcare
84
17.74%
8.66 B
$ 36.76
United States
Energy
85
17.68%
1.94 B
$ 62.69
Singapore
Technology
86
17.3%
817.04 M
$ 12.06
United States
Healthcare
87
17.29%
402.04 M
$ 16.16
United States
Financial Services
88
17.27%
162.18 M
$ 4.59
United States
Communication Services
89
17.21%
11.77 B
$ 44.14
United States
Industrials
90
17.17%
925.81 M
$ 10.64
Bermuda
Energy
91
17.12%
1.07 B
$ 1.74
China
Technology
92
16.95%
2.11 B
$ 9.69
United States
Healthcare
93
16.91%
38.81 B
$ 76.76
United States
Basic Materials
94
16.9%
6.27 B
$ 40.5
United Kingdom
Healthcare
95
16.9%
326.92 M
$ 12.54
United States
96
16.65%
4.31 B
$ 88.38
United States
Healthcare
97
16.56%
515.04 M
$ 17.02
United States
Consumer Cyclical
98
16.52%
285.40 M
$ 4.49
United States
Healthcare
99
16.51%
1.86 B
$ 10.84
Hong Kong
Healthcare
100
16.5%
1.28 B
$ 6.05
Bermuda
Energy
For the most accurate results, consider cross-referencing our data with other sources.

Frequently Asked Questions

Q Which stock has gained the most in October 2023?
A

OTLK (Outlook Therapeutics, Inc.) has the highest monthly gain in this ranking for October 2023, with a gain of 168%. Top performers this month include OTLK, MTC, IBRX.

Q What stocks gained the most in October 2023?
A

The biggest gainers in October 2023 were: OTLK (+168%), MTC (+130%), IBRX (+105%), EXOD (+98%), ENGN (+98%). 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 October 2023. 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 October 2023. 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 October 2023?
A

The top performing sectors in October 2023 included Healthcare, Technology, based on the stocks with highest monthly gains. OTLK 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 October 2023. 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.