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MARKET LEADERS
52-WEEK LEADER
SUNC +60919900%
SunocoCorp LLC
2021 YTD LEADER
CLS +3464%
Celestica Inc.
OCT 2021 LEADER
FI +421%
Fiserv, Inc.
📈 52-Week Top 5 Full List →
1 SUNC +60919900.0% 2 BW +1555.6% 3 AMPX +780.9% 4 BE +558.4% 5 PL +526.9%
📅 2021 YTD Top 5 Full List →
1 CLS +3464.5% 2 FIX +2661.7% 3 VIST +2642.5% 4 UAMY +1960.4% 5 MOD +1511.3%
🗓 October 2021 Top 5 Full List →
1 FI +421.1% 2 BKKT +322.2% 3 NET +69.3% 4 BE +69.3% 5 BROS +65.5%
Quick Access: 52-Week 2021 YTD Oct 2021 Market Cap Dividends
#1 FI leads with +421% October 2021

FI (Fiserv, Inc.) is the best performing stock in October 2021. Following are BKKT (+322%) and NET (+69%). Top performing sectors: Technology (+63% avg, 5 in top 10), Basic Materials (+29% avg, 1 in top 10), Industrials (+26% avg, 2 in top 10).

Top Stock Gainers October 2021 - Monthly Performance Ranked

Discover the best stocks of October 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
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

This ranking shows the best performing stocks during October 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.

Related Rankings
Looking for a specific Symbol?

Data as of March 17, 2026 at 8:27 PM EDT

Rank
Symbol
Company Name
Oct Gain
Market Cap
Price
Country
Sector
1
FI
Fiserv, Inc.
421.11%
73.77 B
$ 135.7
United States
Technology
2
BKKT
Bakkt, Inc.
322.24%
294.62 M
$ 9.64
United States
Technology
3
NET
Cloudflare, Inc.
69.35%
72.98 B
$ 207.33
United States
Technology
4
BE
Bloom Energy Corporation
69.25%
43.11 B
$ 153.68
United States
Industrials
5
BROS
Dutch Bros Inc.
65.52%
8.27 B
$ 50.25
United States
Consumer Cyclical
6
LC
LendingClub Corporation
64.14%
1.60 B
$ 13.87
United States
Financial Services
7
IONQ
IonQ, Inc.
63.48%
12.24 B
$ 33.29
United States
Technology
8
RBC
RBC Bearings Incorporated
55.09%
17.29 B
$ 546.91
United States
Industrials
9
WOLF
Wolfspeed, Inc.
51.81%
826.93 M
$ 18.34
United States
Technology
10
IPI
Intrepid Potash, Inc.
50.67%
557.86 M
$ 41.61
United States
Basic Materials
11
VLN
Valens Semiconductor Ltd.
39.45%
140.04 M
$ 1.33
Israel
Technology
12
LEU
Centrus Energy Corp.
37.12%
4.19 B
$ 212.84
United States
Energy
13
ATEN
A10 Networks, Inc.
36.82%
1.49 B
$ 20.75
United States
Technology
14
PBT
Permian Basin Royalty Trust
36.15%
968.06 M
$ 20.77
United States
Energy
15
NMG
Nouveau Monde Graphite Inc.
35.87%
355.23 M
$ 2.2
Canada
Basic Materials
16
DQ
Daqo New Energy Corp.
34.33%
1.57 B
$ 23.44
China
Technology
17
ZETA
Zeta Global Holdings Corp.
33.87%
4.40 B
$ 17.91
United States
Technology
18
LOB
Live Oak Bancshares, Inc.
33.72%
1.51 B
$ 32.65
United States
Financial Services
19
AMRC
Ameresco, Inc.
33.68%
1.35 B
$ 25.59
United States
Industrials
20
ASAN
Asana, Inc.
33.31%
1.61 B
$ 6.79
United States
Technology
21
SJT
San Juan Basin Royalty Trust
33.2%
230.25 M
$ 4.94
United States
Energy
22
IVT
InvenTrust Properties Corp.
32.05%
2.46 B
$ 31.67
United States
Real Estate
23
DDS
Dillard's, Inc.
31.64%
9.13 B
$ 585.27
United States
Consumer Cyclical
24
XPEV
XPeng Inc.
31.5%
19.52 B
$ 20.09
China
Consumer Cyclical
25
LAC
Lithium Americas Corp.
31.31%
1.33 B
$ 4.39
Canada
Basic Materials
26
NSR
Nomad Royalty Company Ltd.
29.86%
477.01 M
$ 7.76
27
KKR
KKR & Co. Inc.
29.17%
79.74 B
$ 86.1
United States
Financial Services
28
TGLS
Tecnoglass Inc.
28.41%
2.04 B
$ 43.86
United States
Basic Materials
29
CHPT
ChargePoint Holdings, Inc.
28.33%
128.44 M
$ 5.43
United States
Consumer Cyclical
30
CADE
Cadence Bank
27.95%
7.85 B
$ 42.11
United States
Financial Services
31
XPOF
Xponential Fitness, Inc.
27.26%
288.52 M
$ 5.66
United States
Consumer Cyclical
32
MLI
Mueller Industries, Inc.
26.36%
12.27 B
$ 110.55
United States
Industrials
33
JKS
JinkoSolar Holding Co., Ltd.
26.28%
1.32 B
$ 25.46
China
Technology
34
SPOT
Spotify Technology S.A.
26.19%
107.89 B
$ 524
Sweden
Communication Services
35
NRP
Natural Resource Partners L.P.
25.66%
1.55 B
$ 116.77
United States
Energy
36
IFS
Intercorp Financial Service...
25.63%
5.13 B
$ 46.16
Peru
Financial Services
37
SU
Suncor Energy Inc.
25.48%
72.18 B
$ 60.62
Canada
Energy
38
RDW
Redwire Corporation
25.32%
1.83 B
$ 9.54
United States
Industrials
39
PACK
Ranpak Holdings Corp.
25.22%
292.29 M
$ 3.45
United States
Consumer Cyclical
40
GRBK
Green Brick Partners, Inc.
24.94%
2.84 B
$ 65.25
United States
Consumer Cyclical
41
CALX
Calix, Inc.
24.41%
3.38 B
$ 51.05
United States
Technology
42
BLD
TopBuild Corp.
24.37%
10.44 B
$ 370.9
United States
Industrials
43
APO
Apollo Global Management, Inc.
24.37%
60.04 B
$ 103.45
United States
Financial Services
44
EXK
Endeavour Silver Corp.
24.08%
3.02 B
$ 10.21
Canada
Basic Materials
45
FSM
Fortuna Mining Corp.
23.66%
3.17 B
$ 10.3
Canada
Basic Materials
46
FIX
Comfort Systems USA, Inc.
23.51%
49.88 B
$ 1414.1
United States
Industrials
47
SM
SM Energy Company
23.19%
6.38 B
$ 26.76
United States
Energy
48
GNRC
Generac Holdings Inc.
23.12%
11.88 B
$ 202.48
United States
Industrials
49
ETSY
Etsy, Inc.
22.66%
5.25 B
$ 53.14
United States
Consumer Cyclical
50
CLF
Cleveland-Cliffs Inc.
22.63%
4.91 B
$ 8.61
United States
Basic Materials
51
IAG
IAMGOLD Corporation
22.57%
11.65 B
$ 19.64
Canada
Basic Materials
52
CUBI
Customers Bancorp, Inc.
22.51%
2.27 B
$ 66.38
United States
Financial Services
53
SI
Shoulder Innovations, Inc.
22.31%
314.79 M
$ 15.28
54
FUBO
FuboTV Inc.
22.12%
412.68 M
$ 1.17
United States
Communication Services
55
OOMA
Ooma, Inc.
21.39%
383.92 M
$ 13.93
United States
Technology
56
PCG
PG&E Corporation
20.71%
40.55 B
$ 18.45
United States
Utilities
57
SA
Seabridge Gold Inc.
20.68%
3.34 B
$ 31.34
Canada
Basic Materials
58
F
Ford Motor Company
20.62%
46.72 B
$ 11.71
United States
Consumer Cyclical
59
BYON
Bed Bath & Beyond, Inc.
20.59%
541.91 M
$ 9.44
United States
Consumer Cyclical
60
DOCN
DigitalOcean Holdings, Inc.
20.38%
6.62 B
$ 72.01
United States
Technology
61
NSC
Norfolk Southern Corporation
20.33%
65.28 B
$ 290.7
United States
Industrials
62
S
SentinelOne, Inc.
20.2%
4.86 B
$ 14.29
United States
Technology
63
DNA
Ginkgo Bioworks Holdings, Inc.
20.07%
417.99 M
$ 6.75
United States
Healthcare
64
ICE
Intercontinental Exchange, ...
19.98%
92.08 B
$ 161.49
United States
Financial Services
65
HLI
Houlihan Lokey, Inc.
19.94%
9.74 B
$ 139.51
United States
Financial Services
66
U
Unity Software Inc.
19.88%
8.56 B
$ 19.76
United States
Technology
67
UNP
Union Pacific Corporation
19.66%
143.73 B
$ 242.21
United States
Industrials
68
BX
Blackstone Inc.
19.59%
130.93 B
$ 107.12
United States
Financial Services
69
CVE
Cenovus Energy Inc.
19.09%
44.05 B
$ 23.35
Canada
Energy
70
IBP
Installed Building Products...
18.94%
7.78 B
$ 288.33
United States
Consumer Cyclical
71
AOS
A. O. Smith Corporation
18.83%
9.18 B
$ 66.4
United States
Industrials
72
HCI
HCI Group, Inc.
18.57%
2.14 B
$ 164.79
United States
Financial Services
73
HUBS
HubSpot, Inc.
18.41%
13.95 B
$ 264.56
United States
Technology
74
BTE
Baytex Energy Corp.
18.31%
3.12 B
$ 4.06
Canada
Energy
75
HUM
Humana Inc.
18.29%
20.50 B
$ 169.99
United States
Healthcare
76
RVLV
Revolve Group, Inc.
18.27%
1.62 B
$ 22.72
United States
Consumer Cyclical
77
AKA
a.k.a. Brands Holding Corp.
18.26%
101.07 M
$ 9.32
United States
Consumer Cyclical
78
DDL
Dingdong (Cayman) Limited
18.22%
579.35 M
$ 2.67
China
Consumer Defensive
79
NSA
National Storage Affiliates...
18.21%
5.92 B
$ 40.23
United States
Real Estate
80
AYI
Acuity Inc.
18.21%
8.13 B
$ 264.51
United States
Industrials
81
TDOC
Teladoc Health, Inc.
18.06%
961.56 M
$ 5.39
United States
Healthcare
82
NOAH
Noah Holdings Limited
17.69%
825.27 M
$ 11.41
China
Financial Services
83
UPS
United Parcel Service, Inc.
17.62%
82.70 B
$ 97.4
United States
Industrials
84
STN
Stantec Inc.
17.53%
10.21 B
$ 89.51
Canada
Industrials
85
RYI
Ryerson Holding Corp
17.52%
907.09 M
$ 28.16
United States
Industrials
86
MBI
MBIA Inc.
17.46%
294.48 M
$ 5.83
United States
Financial Services
87
CWEN
Clearway Energy, Inc.
17.44%
4.78 B
$ 39.51
United States
Utilities
88
NOA
North American Construction...
17.39%
381.17 M
$ 13.11
Canada
Energy
89
UNH
UnitedHealth Group Incorpor...
17.34%
259.13 B
$ 285.49
United States
Healthcare
90
AP
Ampco-Pittsburgh Corporation
17.33%
169.73 M
$ 8.35
United States
Industrials
91
MAS
Masco Corporation
17.3%
12.64 B
$ 62.1
United States
Industrials
92
LAW
CS Disco, Inc.
17.28%
282.45 M
$ 4.46
United States
Technology
93
STR
Sitio Royalties Corp.
17.13%
2.74 B
$ 18.12
United States
Energy
94
VIST
Vista Energy, S.A.B. de C.V.
17.06%
6.97 B
$ 65.69
Mexico
Energy
95
EGP
EastGroup Properties, Inc.
17.02%
10.13 B
$ 189.97
United States
Real Estate
96
TMHC
Taylor Morrison Home Corpor...
17.02%
5.78 B
$ 59.98
United States
Consumer Cyclical
97
EPAM
EPAM Systems, Inc.
17%
7.57 B
$ 137.05
United States
Technology
98
TYL
Tyler Technologies, Inc.
16.99%
14.99 B
$ 348.63
United States
Technology
99
AGO
Assured Guaranty Ltd.
16.94%
3.85 B
$ 83.51
Bermuda
Financial Services
100
ANET
Arista Networks, Inc.
16.89%
170.44 B
$ 135.35
United States
Technology
For the most accurate results, consider cross-referencing our data with other sources.

Frequently Asked Questions

Q What is the best stock of October 2021?
A

FI (Fiserv, Inc.) was the best performing stock in October 2021 with a gain of 421%. Top performers this month include FI, BKKT, NET.

Q What stocks gained the most in October 2021?
A

The biggest gainers in October 2021 were: FI (+421%), BKKT (+322%), NET (+69%), BE (+69%), BROS (+66%). These monthly rankings show which stocks had the strongest short-term momentum.

Q Which sectors performed best in October 2021?
A

The top performing sectors in October 2021 included Technology, Industrials, Consumer Cyclical, based on the stocks with highest monthly gains. FI led the Technology 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.

Understanding Monthly Stock Performance

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

  • Momentum Trading: Stocks showing strong monthly performance often continue their trend into subsequent months, making this data valuable for momentum-based strategies.
  • Sector Rotation: Monthly rankings can reveal which sectors are gaining favor with investors, signaling potential rotation opportunities.
  • 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 - understanding the cause helps assess sustainability.
  • Watch for Reversals: Extreme monthly gains sometimes precede corrections, so consider risk management when chasing recent performers.