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Compare stocks with our powerful stock comparison tool. Analyze fundamentals, price performance, and key financial indicators to make informed investment decisions. Our tool lets you compare up to ten stocks side by side based on Performance Charts, Price & Volume, MarketRank™, Analyst Ratings, Sales & Book Value, Profitability & Earnings, Dividends, Debt, Ownership, Headlines, and more. Simply enter up to ten stock symbols (e.g., BAC, JPM, WFC, C, GS) to get started and uncover top investment opportunities.

CompanyCurrent Price50-Day Moving Average52-Week RangeMarket CapBetaAvg. VolumeToday's Volume
American Superconductor Corporation stock logo
AMSC
American Superconductor
$59.79
-1.5%
$54.89
$13.98
$65.70
$2.74B31.32 million shs830,959 shs
Preformed Line Products Company stock logo
PLPC
Preformed Line Products
$205.93
+2.7%
$188.02
$118.99
$209.00
$987.10M0.7595,068 shs151,443 shs
Thermon Group Holdings, Inc. stock logo
THR
Thermon Group
$26.04
-2.1%
$26.29
$23.05
$33.25
$879.53M1.09247,554 shs192,955 shs
Vicor Corporation stock logo
VICR
Vicor
$52.62
+2.2%
$49.85
$38.92
$65.70
$2.31B1.73288,903 shs194,399 shs
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Compare Price Performance

Company1-Day Performance7-Day Performance30-Day Performance90-Day Performance1-Year Performance
American Superconductor Corporation stock logo
AMSC
American Superconductor
+7.34%+2.59%+21.21%+52.82%+168.58%
Preformed Line Products Company stock logo
PLPC
Preformed Line Products
+5.84%-0.20%+4.10%+19.59%+65.10%
Thermon Group Holdings, Inc. stock logo
THR
Thermon Group
+0.75%-2.67%+5.06%-6.30%-6.20%
Vicor Corporation stock logo
VICR
Vicor
+5.90%+4.44%+1.86%+9.43%+24.34%
CompanyCurrent Price50-Day Moving Average52-Week RangeMarket CapBetaAvg. VolumeToday's Volume
American Superconductor Corporation stock logo
AMSC
American Superconductor
$59.79
-1.5%
$54.89
$13.98
$65.70
$2.74B31.32 million shs830,959 shs
Preformed Line Products Company stock logo
PLPC
Preformed Line Products
$205.93
+2.7%
$188.02
$118.99
$209.00
$987.10M0.7595,068 shs151,443 shs
Thermon Group Holdings, Inc. stock logo
THR
Thermon Group
$26.04
-2.1%
$26.29
$23.05
$33.25
$879.53M1.09247,554 shs192,955 shs
Vicor Corporation stock logo
VICR
Vicor
$52.62
+2.2%
$49.85
$38.92
$65.70
$2.31B1.73288,903 shs194,399 shs
The 10 Best AI Stocks to Own in 2025 Cover

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Compare Price Performance

Company1-Day Performance7-Day Performance30-Day Performance90-Day Performance1-Year Performance
American Superconductor Corporation stock logo
AMSC
American Superconductor
+7.34%+2.59%+21.21%+52.82%+168.58%
Preformed Line Products Company stock logo
PLPC
Preformed Line Products
+5.84%-0.20%+4.10%+19.59%+65.10%
Thermon Group Holdings, Inc. stock logo
THR
Thermon Group
+0.75%-2.67%+5.06%-6.30%-6.20%
Vicor Corporation stock logo
VICR
Vicor
+5.90%+4.44%+1.86%+9.43%+24.34%
CompanyConsensus Rating ScoreConsensus RatingConsensus Price Target% Upside from Current Price
American Superconductor Corporation stock logo
AMSC
American Superconductor
2.50
Moderate Buy$39.00-34.77% Downside
Preformed Line Products Company stock logo
PLPC
Preformed Line Products
3.00
BuyN/AN/A
Thermon Group Holdings, Inc. stock logo
THR
Thermon Group
2.00
HoldN/AN/A
Vicor Corporation stock logo
VICR
Vicor
2.67
Moderate Buy$43.00-18.28% Downside

Current Analyst Ratings Breakdown

Latest THR, AMSC, VICR, and PLPC Analyst Ratings

DateCompanyBrokerageActionRatingPrice TargetDetails
10/8/2025
American Superconductor Corporation stock logo
AMSC
American Superconductor
Weiss Ratings
Subscribe to MarketBeat All Access for the firm's recommendation accuracy rating
Reiterated RatingHold (C)
10/8/2025
Preformed Line Products Company stock logo
PLPC
Preformed Line Products
Weiss Ratings
Subscribe to MarketBeat All Access for the firm's recommendation accuracy rating
UpgradeHold (C+)Buy (B-)
10/8/2025
Thermon Group Holdings, Inc. stock logo
THR
Thermon Group
Weiss Ratings
Subscribe to MarketBeat All Access for the firm's recommendation accuracy rating
Reiterated RatingHold (C+)
10/8/2025
Vicor Corporation stock logo
VICR
Vicor
Weiss Ratings
Subscribe to MarketBeat All Access for the firm's recommendation accuracy rating
Reiterated RatingHold (C)
9/27/2025
American Superconductor Corporation stock logo
AMSC
American Superconductor
Weiss Ratings
Subscribe to MarketBeat All Access for the firm's recommendation accuracy rating
Reiterated RatingHold (C)
9/27/2025
Preformed Line Products Company stock logo
PLPC
Preformed Line Products
Weiss Ratings
Subscribe to MarketBeat All Access for the firm's recommendation accuracy rating
Reiterated RatingHold (C+)
9/27/2025
Thermon Group Holdings, Inc. stock logo
THR
Thermon Group
Weiss Ratings
Subscribe to MarketBeat All Access for the firm's recommendation accuracy rating
Reiterated RatingHold (C+)
9/27/2025
Vicor Corporation stock logo
VICR
Vicor
Weiss Ratings
Subscribe to MarketBeat All Access for the firm's recommendation accuracy rating
Reiterated RatingHold (C)
7/31/2025
American Superconductor Corporation stock logo
AMSC
American Superconductor
Oppenheimer
Subscribe to MarketBeat All Access for the firm's recommendation accuracy rating
Reiterated RatingOutperform
7/23/2025
Vicor Corporation stock logo
VICR
Vicor
Needham & Company LLC
Subscribe to MarketBeat All Access for the firm's recommendation accuracy rating
Reiterated RatingHold
(Data available from 10/9/2022 forward. View 10+ years of historical ratings with our analyst ratings screener.)
CompanyAnnual RevenuePrice/SalesCashflowPrice/CashBook ValuePrice/Book
American Superconductor Corporation stock logo
AMSC
American Superconductor
$222.82M12.12$0.57 per share105.15$5.00 per share11.96
Preformed Line Products Company stock logo
PLPC
Preformed Line Products
$632.23M1.60$12.15 per share16.95$86.23 per share2.39
Thermon Group Holdings, Inc. stock logo
THR
Thermon Group
$498.21M1.73$2.52 per share10.35$14.70 per share1.77
Vicor Corporation stock logo
VICR
Vicor
$359.06M6.58$0.56 per share93.97$12.62 per share4.17
CompanyNet IncomeEPSTrailing P/E RatioForward P/E RatioP/E GrowthNet MarginsReturn on Equity (ROE)Return on Assets (ROA)Next Earnings Date
American Superconductor Corporation stock logo
AMSC
American Superconductor
$6.03M$0.39153.31149.48N/A6.00%9.35%6.20%10/29/2025 (Estimated)
Preformed Line Products Company stock logo
PLPC
Preformed Line Products
$37.09M$8.5624.06N/A6.70%9.69%7.09%10/29/2025 (Estimated)
Thermon Group Holdings, Inc. stock logo
THR
Thermon Group
$53.51M$1.5816.4812.83N/A10.89%12.65%8.24%11/6/2025 (Estimated)
Vicor Corporation stock logo
VICR
Vicor
$6.13M$1.4636.04N/A15.44%11.32%9.96%10/21/2025 (Estimated)

Latest THR, AMSC, VICR, and PLPC Earnings

DateQuarterCompanyConsensus EstimateReported EPSBeat/MissGap EPSRevenue EstimateActual RevenueDetails
11/6/2025Q2 2026
Thermon Group Holdings, Inc. stock logo
THR
Thermon Group
$0.36N/AN/AN/A$119.43 millionN/A
10/29/2025Q2 2026
American Superconductor Corporation stock logo
AMSC
American Superconductor
$0.15N/AN/AN/A$67.23 millionN/A
10/21/2025Q3 2025
Vicor Corporation stock logo
VICR
Vicor
$0.20N/AN/AN/A$95.40 millionN/A
8/7/2025Q1 2026
Thermon Group Holdings, Inc. stock logo
THR
Thermon Group
$0.37$0.36-$0.01$0.26$122.53 million$108.90 million
7/30/2025Q1 2026
American Superconductor Corporation stock logo
AMSC
American Superconductor
$0.12$0.18+$0.06$0.17$64.97 million$72.36 million
7/30/2025Q2 2025
Preformed Line Products Company stock logo
PLPC
Preformed Line Products
N/A$2.56N/A$2.56N/A$169.60 million
7/22/2025Q2 2025
Vicor Corporation stock logo
VICR
Vicor
$0.18$0.91+$0.73$0.91$96.43 million$141.05 million
CompanyAnnual PayoutDividend Yield3-Year Dividend GrowthPayout RatioYears of Consecutive Growth
American Superconductor Corporation stock logo
AMSC
American Superconductor
N/AN/AN/AN/AN/A
Preformed Line Products Company stock logo
PLPC
Preformed Line Products
$0.800.39%N/A9.35%N/A
Thermon Group Holdings, Inc. stock logo
THR
Thermon Group
N/AN/AN/AN/AN/A
Vicor Corporation stock logo
VICR
Vicor
N/AN/AN/AN/AN/A

Latest THR, AMSC, VICR, and PLPC Dividends

AnnouncementCompanyPeriodAmountYieldEx-Dividend DateRecord DatePayable Date
9/18/2025
Preformed Line Products Company stock logo
PLPC
Preformed Line Products
quarterly$0.200.4%10/1/202510/1/202510/20/2025
9/18/2025
Preformed Line Products Company stock logo
PLPC
Preformed Line Products
quarterly$0.200.39%10/1/202510/20/2025
(Data available from 1/1/2013 forward)
CompanyDebt-to-Equity RatioCurrent RatioQuick Ratio
American Superconductor Corporation stock logo
AMSC
American Superconductor
N/A
3.31
2.63
Preformed Line Products Company stock logo
PLPC
Preformed Line Products
0.06
3.08
1.83
Thermon Group Holdings, Inc. stock logo
THR
Thermon Group
0.23
2.43
1.49
Vicor Corporation stock logo
VICR
Vicor
N/A
6.97
5.68

Institutional Ownership

CompanyInstitutional Ownership
American Superconductor Corporation stock logo
AMSC
American Superconductor
52.28%
Preformed Line Products Company stock logo
PLPC
Preformed Line Products
41.19%
Thermon Group Holdings, Inc. stock logo
THR
Thermon Group
99.76%
Vicor Corporation stock logo
VICR
Vicor
47.45%

Insider Ownership

CompanyInsider Ownership
American Superconductor Corporation stock logo
AMSC
American Superconductor
4.80%
Preformed Line Products Company stock logo
PLPC
Preformed Line Products
35.10%
Thermon Group Holdings, Inc. stock logo
THR
Thermon Group
2.50%
Vicor Corporation stock logo
VICR
Vicor
31.30%
CompanyEmployeesShares OutstandingFree FloatOptionable
American Superconductor Corporation stock logo
AMSC
American Superconductor
33045.16 million42.99 millionOptionable
Preformed Line Products Company stock logo
PLPC
Preformed Line Products
3,4014.93 million3.20 millionNot Optionable
Thermon Group Holdings, Inc. stock logo
THR
Thermon Group
1,56833.06 million32.24 millionOptionable
Vicor Corporation stock logo
VICR
Vicor
1,10044.92 million30.86 millionOptionable

Recent News About These Companies

Vicor (NASDAQ:VICR) Shares Down 7.3% - What's Next?
Stocks With Rising Relative Strength: Vicor
Vicor (VICR) Stock Trades Down, Here Is Why

New MarketBeat Followers Over Time

Media Sentiment Over Time

Top Headlines

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American Superconductor stock logo

American Superconductor NASDAQ:AMSC

$59.79 -0.91 (-1.50%)
Closing price 04:00 PM Eastern
Extended Trading
$59.91 +0.12 (+0.20%)
As of 07:53 PM Eastern
Extended trading is trading that happens on electronic markets outside of regular trading hours. This is a fair market value extended hours price provided by Polygon.io. Learn more.

American Superconductor Corporation, together with its subsidiaries, provides megawatt-scale power resiliency solutions worldwide. The company operates through Grid and Wind segments. The Grid segment offers products and services that enable electric utilities, industrial facilities, and renewable energy project developers to connect, transmit, and distribute power under the Gridtec Solutions brand. It provides transmission planning services, which identify power grid congestion, poor power quality, and other risks; grid interconnection solutions for wind farms and solar power plants, power quality systems, and transmission and distribution cable systems; D-VAR systems used for controlling power flow and voltage in the AC transmission system; actiVAR system, a fast-switching medium-voltage reactive compensation solution; armorVAR system installed for reactive compensation, power factor correction, loss reduction, utility bill savings, and mitigation of common power quality concerns related to power converter-based generation and load devices; and D-VAR volt var optimization (VVO) that serves the distribution power grid market. This segment also offers ship protection systems, which reduce a naval ship's magnetic signature; and ON board power delivery systems, power generation systems, and propulsion systems; and transformers and rectifiers systems. The Wind segment designs wind turbine systems and licenses these designs to third parties under the Windtec Solutions brand. It also supplies power electronics and software-based control systems, engineered designs, and support services; and provides customer support services to wind turbine manufacturers. This segment's design portfolio comprises a range of drivetrains and power ratings of 2 megawatts and higher. American Superconductor Corporation was incorporated in 1987 and is headquartered in Ayer, Massachusetts.

Preformed Line Products stock logo

Preformed Line Products NASDAQ:PLPC

$205.93 +5.50 (+2.74%)
Closing price 04:00 PM Eastern
Extended Trading
$209.50 +3.57 (+1.73%)
As of 07:59 PM Eastern
Extended trading is trading that happens on electronic markets outside of regular trading hours. This is a fair market value extended hours price provided by Polygon.io. Learn more.

Preformed Line Products Company, together with its subsidiaries, designs and manufactures products and systems that are used in the construction and maintenance of overhead, ground-mounted, and underground networks for the energy, telecommunication, cable, data communication, and other industries. The company offers optical ground wire products to support, protect, terminate, and splice transmission and distribution lines, as well as bolted, welded, and compressed connectors for substations; and string hardware products, polymer insulators, wildlife protection, substation fittings, and motion control devices. It also provides rugged outside plant closures to protect and support wireline and wireless networks, such as copper cable or fiber optic cable from moisture, environmental hazards, and other contaminants; and hardware assemblies, pole line hardware, plastic products, cable dynamics/vibration solutions, interior/exterior connectors, tools, and urethane solutions that are used by energy, renewable energy, communications, cable, and special industries for various applications. The company serves public and private energy utilities and communication companies, cable operators, governmental agencies, contractors and subcontractors, distributors, and value-added resellers in the Americas, Europe, the Middle East, Africa, and the Asia-Pacific. It markets its products through a direct sales force, as well as through manufacturing representatives. Preformed Line Products Company was incorporated in 1947 and is headquartered in Mayfield Village, Ohio.

Thermon Group stock logo

Thermon Group NYSE:THR

$26.04 -0.56 (-2.11%)
Closing price 03:59 PM Eastern
Extended Trading
$26.05 +0.01 (+0.04%)
As of 06:14 PM Eastern
Extended trading is trading that happens on electronic markets outside of regular trading hours. This is a fair market value extended hours price provided by Polygon.io. Learn more.

Thermon Group Holdings, Inc. provides engineered industrial process heating solutions for process industries in the United States and Latin America, Canada, Europe, the Middle East, Africa, and the Asia-Pacific. It offers heat tracing products, such as electric heat tracing cables, steam heating solutions, controls, monitoring and software, instrumentation, project services, industrial heating and filtration solutions, temporary electrical power distribution and lighting, and other products and services. The company also provides controls, monitoring, and software systems for the control and management of a heat trace system; environmental heating solutions under the Ruffneck, Norsemen, and Catadyne brands; process heating solutions under the Caloritech brand name; filtration solutions under the 3L Filters brand; rail and transit solutions under the Hellfire, Velocity, ArcticSense, and other brand names; and boilers under the Vapor Power, Precision Boilers, and Caloritech brands. In addition, it offers project services; transportation heating products, including track and switch heaters, accessories, control panels, rail heaters, gas blower accessories, and air curtains; transit heaters; and velocity heat products. Further, the company offers temporary power solutions; heating systems, such as engineered electric heat, explosion proof gas catalytic heaters, heaters for harshest environments, methane abatement, and engineered filtration system; electrically, steam, and fluid heated tubing bundles; and pre-insulated tubing and system accessories tubing bundles. It serves chemical and petrochemical, oil and gas, power generation, rail and transit, commercial, energy transition/decarbonization, mining and mineral processing, maritime/shipbuilding, semiconductors, pharmaceutical and biotechnology, food and beverage, data centers, and renewables industries through a network of sales and service professionals, and distributors. Thermon Group Holdings, Inc. was founded in 1954 and is headquartered in Austin, Texas.

Vicor stock logo

Vicor NASDAQ:VICR

$52.62 +1.12 (+2.17%)
Closing price 04:00 PM Eastern
Extended Trading
$52.64 +0.02 (+0.03%)
As of 07:53 PM Eastern
Extended trading is trading that happens on electronic markets outside of regular trading hours. This is a fair market value extended hours price provided by Polygon.io. Learn more.

Vicor Corporation, together with its subsidiaries, designs, develops, manufactures, and markets modular power components and power systems for converting electrical power in the United States, Europe, the Asia Pacific, and internationally. The company offers a range of brick-format DC-DC converters; complementary components provide AC line rectification, input filtering, power factor correction, and transient protection; and input and output voltage, and output power products, as well as electrical and mechanical accessories. It also design, sells, and service custom power systems solutions. The company serves independent manufacturers of electronic devices, original equipment manufacturers, and their contract manufacturers in the aerospace and aviation, defense electronics, satellites, factory automation, instrumentation, test equipment, transportation, telecommunications and networking infrastructure and vehicles, and transportation markets. Vicor Corporation was incorporated in 1981 and is headquartered in Andover, Massachusetts.