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CompanyCurrent Price50-Day Moving Average52-Week RangeMarket CapBetaAvg. VolumeToday's Volume
AB Dynamics plc stock logo
ABDDF
AB Dynamics
C$33.00
C$33.00
C$33.00
C$33.00
N/AN/AN/AN/A
Knorr-Bremse - Unsponsored ADR stock logo
KNRRY
Knorr-Bremse
$25.09
-0.9%
$25.36
$17.34
$27.02
$16.18BN/A6,954 shs7,160 shs
Optec International, Inc. stock logo
OPTI
Optec International
$0.00
+50.0%
$0.00
$0.00
$0.00
$24KN/A1.06 million shs1.21 million shs
UQM Technologies Inc stock logo
UQM
UQM Technologies
$1.71
$1.71
$0.80
$1.71
$96.73MN/A443,684 shs98,000 shs
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Compare Price Performance

Company1-Day Performance7-Day Performance30-Day Performance90-Day Performance1-Year Performance
AB Dynamics plc stock logo
ABDDF
AB Dynamics
0.00%0.00%0.00%0.00%0.00%
Knorr-Bremse - Unsponsored ADR stock logo
KNRRY
Knorr-Bremse
-0.87%+1.62%-6.80%+0.72%+21.97%
Optec International, Inc. stock logo
OPTI
Optec International
-6.67%-6.67%-22.22%-22.22%+180.00%
UQM Technologies Inc stock logo
UQM
UQM Technologies
0.00%0.00%0.00%0.00%0.00%
CompanyCurrent Price50-Day Moving Average52-Week RangeMarket CapBetaAvg. VolumeToday's Volume
AB Dynamics plc stock logo
ABDDF
AB Dynamics
C$33.00
C$33.00
C$33.00
C$33.00
N/AN/AN/AN/A
Knorr-Bremse - Unsponsored ADR stock logo
KNRRY
Knorr-Bremse
$25.09
-0.9%
$25.36
$17.34
$27.02
$16.18BN/A6,954 shs7,160 shs
Optec International, Inc. stock logo
OPTI
Optec International
$0.00
+50.0%
$0.00
$0.00
$0.00
$24KN/A1.06 million shs1.21 million shs
UQM Technologies Inc stock logo
UQM
UQM Technologies
$1.71
$1.71
$0.80
$1.71
$96.73MN/A443,684 shs98,000 shs
A Guide To High-Short-Interest Stocks Cover

MarketBeat's analysts have just released their top five short plays for September 2025. Learn which stocks have the most short interest and how to trade them. Enter your email address to see which companies made the list.

Get This Free Report

Compare Price Performance

Company1-Day Performance7-Day Performance30-Day Performance90-Day Performance1-Year Performance
AB Dynamics plc stock logo
ABDDF
AB Dynamics
0.00%0.00%0.00%0.00%0.00%
Knorr-Bremse - Unsponsored ADR stock logo
KNRRY
Knorr-Bremse
-0.87%+1.62%-6.80%+0.72%+21.97%
Optec International, Inc. stock logo
OPTI
Optec International
-6.67%-6.67%-22.22%-22.22%+180.00%
UQM Technologies Inc stock logo
UQM
UQM Technologies
0.00%0.00%0.00%0.00%0.00%
CompanyConsensus Rating ScoreConsensus RatingConsensus Price Target% Upside from Current Price
AB Dynamics plc stock logo
ABDDF
AB Dynamics
2.00
HoldN/AN/A
Knorr-Bremse - Unsponsored ADR stock logo
KNRRY
Knorr-Bremse
2.00
HoldN/AN/A
Optec International, Inc. stock logo
OPTI
Optec International
0.00
N/AN/AN/A
UQM Technologies Inc stock logo
UQM
UQM Technologies
0.00
N/AN/AN/A

Current Analyst Ratings Breakdown

Latest KNRRY, UQM, OPTI, and ABDDF Analyst Ratings

DateCompanyBrokerageActionRatingPrice TargetDetails
8/29/2025
Knorr-Bremse - Unsponsored ADR stock logo
KNRRY
Knorr-Bremse
Zacks Research
Subscribe to MarketBeat All Access for the firm's recommendation accuracy rating
DowngradeStrong-BuyHold
8/5/2025
Knorr-Bremse - Unsponsored ADR stock logo
KNRRY
Knorr-Bremse
Citigroup
Subscribe to MarketBeat All Access for the firm's recommendation accuracy rating
Reiterated RatingNeutral
7/10/2025
Knorr-Bremse - Unsponsored ADR stock logo
KNRRY
Knorr-Bremse
Barclays
Subscribe to MarketBeat All Access for the firm's recommendation accuracy rating
Reiterated RatingUnderweight
(Data available from 9/10/2022 forward. View 10+ years of historical ratings with our analyst ratings screener.)
CompanyAnnual RevenuePrice/SalesCashflowPrice/CashBook ValuePrice/Book
AB Dynamics plc stock logo
ABDDF
AB Dynamics
N/AN/AN/AN/AN/AN/A
Knorr-Bremse - Unsponsored ADR stock logo
KNRRY
Knorr-Bremse
N/AN/AN/AN/AN/AN/A
Optec International, Inc. stock logo
OPTI
Optec International
N/AN/AN/AN/AN/AN/A
UQM Technologies Inc stock logo
UQM
UQM Technologies
N/AN/AN/AN/AN/AN/A
CompanyNet IncomeEPSTrailing P/E RatioForward P/E RatioP/E GrowthNet MarginsReturn on Equity (ROE)Return on Assets (ROA)Next Earnings Date
AB Dynamics plc stock logo
ABDDF
AB Dynamics
N/AN/A0.00N/AN/AN/AN/AN/A
Knorr-Bremse - Unsponsored ADR stock logo
KNRRY
Knorr-Bremse
N/AN/A0.001.14N/AN/AN/A10/30/2025 (Estimated)
Optec International, Inc. stock logo
OPTI
Optec International
N/AN/A0.00N/AN/AN/AN/AN/A
UQM Technologies Inc stock logo
UQM
UQM Technologies
N/AN/A0.00N/AN/AN/AN/AN/A
CompanyAnnual PayoutDividend Yield3-Year Dividend GrowthPayout RatioYears of Consecutive Growth
AB Dynamics plc stock logo
ABDDF
AB Dynamics
N/AN/AN/AN/AN/A
Knorr-Bremse - Unsponsored ADR stock logo
KNRRY
Knorr-Bremse
N/AN/AN/AN/AN/A
Optec International, Inc. stock logo
OPTI
Optec International
N/AN/AN/AN/AN/A
UQM Technologies Inc stock logo
UQM
UQM Technologies
N/AN/AN/AN/AN/A

Institutional Ownership

CompanyInstitutional Ownership
AB Dynamics plc stock logo
ABDDF
AB Dynamics
N/A
Knorr-Bremse - Unsponsored ADR stock logo
KNRRY
Knorr-Bremse
N/A
Optec International, Inc. stock logo
OPTI
Optec International
N/A
UQM Technologies Inc stock logo
UQM
UQM Technologies
N/A

Insider Ownership

CompanyInsider Ownership
AB Dynamics plc stock logo
ABDDF
AB Dynamics
N/A
Knorr-Bremse - Unsponsored ADR stock logo
KNRRY
Knorr-Bremse
N/A
Optec International, Inc. stock logo
OPTI
Optec International
50.34%
UQM Technologies Inc stock logo
UQM
UQM Technologies
N/A
CompanyEmployeesShares OutstandingFree FloatOptionable
AB Dynamics plc stock logo
ABDDF
AB Dynamics
471N/AN/ANot Optionable
Knorr-Bremse - Unsponsored ADR stock logo
KNRRY
Knorr-Bremse
29,051644.80 millionN/ANot Optionable
Optec International, Inc. stock logo
OPTI
Optec International
111.65 millionN/ANot Optionable
UQM Technologies Inc stock logo
UQM
UQM Technologies
6656.57 millionN/ANot Optionable

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AB Dynamics stock logo

AB Dynamics OTCMKTS:ABDDF

C$33.00 0.00 (0.00%)
As of 09/8/2025

AB Dynamics plc designs, develops, manufactures, and supplies vehicle test and development systems, and verification products and services for driver assistance systems, autonomous system, and vehicle dynamics. The company offers advanced vehicle testing solutions from physical proving ground automation to large scale virtual testing in simulation; rFpro, a simulation environment for the automotive and motorsport industries; and full-scale track testing services, including ADAS and vehicle dynamics tests, along with applied research, human factors, and simulation. It also provides automotive testing services comprising evaluations of ADAS systems, infotainment, connectivity, electric vehicle performance and charging, and other associated functions; and retrofit solutions that enable the automation of conventional vehicle fleets rapidly and cost-effectively. In addition, the company creates and deploys a range of Driver-in-the-Loop (DIL) simulators for all types of vehicles, driving scenarios, experiments, and product development aims. Its products are used to evaluate the performance of vehicle active safety systems, autonomous technologies, electric vehicles, vehicle's durability, and dynamics. The company operates in the United Kingdom, Germany, the United States, China, Japan, Singapore, and internationally. The company was founded in 1982 and is headquartered in Bradford on Avon, the United Kingdom.

Knorr-Bremse stock logo

Knorr-Bremse OTCMKTS:KNRRY

$25.09 -0.22 (-0.87%)
As of 09/9/2025 03:59 PM Eastern

Knorr-Bremse AG, together with its subsidiaries, engages in the development, production, marketing, and servicing of braking and other systems for rail and commercial vehicles worldwide. The company operates in two segments, Rail Vehicle Systems and Commercial Vehicle Systems. The Rail Vehicle Systems segment offers braking systems, entrance and HVAC systems, sanitary systems, coupling systems, digital solutions, smart services for optimizing rail traffic, power electrics, rail computing and communication (RCC)/TCMS, signaling systems, stationary and mobile testing equipment, windshield wiper and wash systems, and extensive aftermarket solutions. The Commercial Vehicle Systems segment provides pneumatic braking systems comprising brake control systems, disk brakes, drum brakes, brake cylinders, valves, and pedal units; steering systems; vehicle dynamics solutions, such as anti-lock braking systems and electronic stability programs; driver assistance systems; automated driving and electronic leveling control; energy supply and distribution systems, including compressors and air treatment products; and engine components and transmission control systems, such as vibration dampers, engine air management, transmission control, and gear/clutch actuation products for trucks, buses, trailers, and agricultural machinery. In addition, it offers leasing, holding, logistics, and media and IT services. The company was founded in 1905 and is headquartered in Munich, Germany. Knorr-Bremse AG is a subsidiary of KB Holding GmbH.

Optec International stock logo

Optec International OTCMKTS:OPTI

$0.0021 +0.00 (+50.00%)
As of 09:50 AM Eastern

Optec International, Inc. engages in selling and marketing optimized fuel maximizer units in North America and internationally. It markets optimized fuel maximizer for passenger vehicles, intermediate/medium duty trucks, off-road equipment, generator systems, heavy duty diesel on-road vehicles, and transportation refrigeration units. The company was formerly known as Green Meadow Products, Inc. and changed its name to Optec International, Inc. in August 2017. Optec International, Inc. was founded in 2012 and is based in Carlsbad, California.

UQM Technologies stock logo

UQM Technologies NYSEAMERICAN:UQM

$1.71 0.00 (0.00%)
As of 07/31/2019

UQM Technologies, Inc., together with its subsidiaries, develops, manufactures, and sells electric motors, generators, power electronic controllers, and fuel cell compressors in the United states and internationally. The company offers propulsion motors and generators, auxiliary motors, and electronic controls and DC-to-DC converters for electric, hybrid electric, plug-in hybrid electric, and fuel cell applications. It also provides research, development, and application engineering contract services. The company sells its products to original equipment manufacturers (OEMs), tier 1 suppliers of OEMs, and vehicle integrators in various markets, including passenger buses, mining vehicles, marine, military, aircraft HVAC, airplane tugs, automobiles, and other markets, as well as commercial trucks, vans, and shuttles. UQM Technologies, Inc. was founded in 1967 and is headquartered in Longmont, Colorado.