SDIIF (SDI Group) 3-1 Month Momentum %: -4.55% (As of Jul. 19, 2026)

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Director of Data and Quant Analytics at GuruFocus
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Charlie Tian
Charlie Tian
Founder & CEO of GuruFocus
Dr. Charlie Tian is the founder and CEO of GuruFocus.com, a leading global investment research platform established in 2004. With a Ph.D. in physics, Dr. Tian transitioned from science to finance, applying a data-driven, disciplined approach to value investing.

SDIIF SDI Group PLC SDIIF
94 GF Score
Price $1.13
GF Value $1.31
Valuation Modestly Undervalued
! 4 Warning Signs
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What is SDI Group 3-1 Month Momentum %?

SDI Group SDIIF 94 3-1 Month Momentum % is -4.55% as of Jul. 19, 2026. GuruFocus rates SDIIF with a GF Score™ of 94/100 and a GF Value™ of $1.31 (Modestly Undervalued). The stock has 4 warning signs investors should review. Among 2,489 Hardware companies, SDI Group ranks worse than 65.61% on this metric.

3-1 Month Momentum % is the total return of the stock from 3-month ago to 1-month ago. As of today (2026-07-19), SDI Group's 3-1 Month Momentum % is -4.55%.

The industry rank for SDI Group's 3-1 Month Momentum % or its related term are showing as below:

SDIIF's 3-1 Month Momentum % is ranked worse than
65.61% of 2489 companies
in the Hardware industry
Industry Median: 1.5 vs SDIIF: -4.55

SDI Group  (OTCPK:SDIIF) 3-1 Month Momentum % Explanation

Momentum investing is a trading strategy in which investors buy securities that are rising and sell before the prices start to go back down. The 3-1 Month Momentum % measures the total return to a stock over the past three months, but ignores the previous month.

The reason why the most recent month’s return dropped related to the short-term reversal effect associated with momentum. There is an academic finding that short-term momentum actually has a reversal effect, whereby the previous winners (measured over the past months) do poorly the next month, while the previous losers do well the next month. In order to eliminate the short-term reversal effect, the previous month return was not included in this calculation.


SDI Group 3-1 Month Momentum % Related Terms


SDIIF vs COHR, KEYS, GRMN: 3-1 Month Momentum % Comparison

For the Scientific & Technical Instruments subindustry, SDI Group's 3-1 Month Momentum %, along with its competitors' market caps and 3-1 Month Momentum % data, can be viewed below:

* Competitive companies are chosen from companies within the same industry, with headquarter located in same country, with closest market capitalization; x-axis shows the market cap, and y-axis shows the term value; the bigger the dot, the larger the market cap. Note that "N/A" values will not show up in the chart.


SDI Group 3-1 Month Momentum % vs Hardware Industry

For the Hardware industry and Technology sector, SDI Group's 3-1 Month Momentum % distribution charts can be found below:

* The bar in red indicates where SDI Group's 3-1 Month Momentum % falls into.


SDIIF
94GF Score
SDI Group PLC SDIIF
3-1 Month Momentum % is just one metric. See GF Score™, valuation, warning signs, and more.
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SDI Group  (OTCPK:SDIIF) 3-1 Month Momentum % Calculation

3-1 Month Momentum % is calculated as following:

3-1 Month Momentum %=( Price 1-month ago / Price 3-month ago - 1 ) * 100 %

* For Operating Data section: All numbers are indicated by the unit behind each term and all currency related amount are in USD.
* For other sections: All numbers are in millions except for per share data, ratio, and percentage. All currency related amount are indicated in the company's associated stock exchange currency.

Frequently Asked Questions Learn more about 3-1 Month Momentum % →
What does a 3-1 Month Momentum % of -4.55% mean?
SDI Group (SDIIF) has a 3-1 Month Momentum % of -4.55% as of Jul. 19, 2026. 3-1 Month Momentum measures the total return of the stock from 3-month ago to 1-month ago. View historical data on SDI Group and its competitors. According to the industry distribution chart, SDI Group ranks #1633 out of 2489 companies in the Hardware industry, placing it in the top 65.6%.
Is SDI Group's 3-1 Month Momentum % too high?
SDI Group's current 3-1 Month Momentum % is -4.55%. Based on the distribution chart, SDI Group ranks #1633 out of 2489 companies in the Hardware industry, which is below the industry midpoint. Overall, SDI Group has a GF Score™ of 94/100 and is considered Modestly Undervalued, reflecting its overall financial health beyond just this single metric.
How does SDI Group's 3-1 Month Momentum % compare to COHR and KEYS?
According to the Hardware industry distribution chart, SDI Group ranks #1633 out of 2489 companies for 3-1 Month Momentum %. This places SDI Group in the lower half of its industry. The industry median 3-1 Month Momentum % is 1.50. See the competitive comparison table and distribution chart on this page for a detailed peer-by-peer breakdown.
What is a good 3-1 Month Momentum % for a Hardware company?
The median 3-1 Month Momentum % among Hardware companies is 1.50, based on 2,489 companies in the industry. Companies in the top quartile (top 25%) have a 3-1 Month Momentum % significantly above this median, while those in the bottom quartile fall well below. However, 3-1 Month Momentum % should not be evaluated in isolation — investors should consider it alongside profitability, growth, and financial strength metrics. Use the industry distribution chart on this page to see where any company falls relative to its peers.
What does a high 3-1 Month Momentum % mean?
A high 3-1 Month Momentum % can signal that a stock is expensive relative to its fundamentals. 3-1 Month Momentum measures the total return of the stock from 3-month ago to 1-month ago. View historical data on SDI Group and its competitors. For the Hardware industry, the median 3-1 Month Momentum % is 1.50 — values significantly above this may indicate overvaluation, while values below may suggest a bargain or underlying issues. SDI Group's current 3-1 Month Momentum % is -4.55%. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is SDI Group stock overvalued right now?
Based on GuruFocus' analysis, SDI Group (SDIIF) is currently considered Modestly Undervalued. The stock's GF Value™ is $1.31, compared to a current price of $1.13 — trading 13.7% below its estimated fair value. The current 3-1 Month Momentum % is -4.55%. SDI Group's overall GF Score™ is 94/100 with 4 warning signs to review. Investors should evaluate multiple metrics — including profitability, growth, and financial strength — before making a decision.
How is 3-1 Month Momentum % calculated?
3-1 Month Momentum % is calculated from a company's financial statements. For SDI Group (SDIIF), the current 3-1 Month Momentum % is -4.55% as of Jul. 19, 2026. GuruFocus calculates this using data sourced from SEC filings and annual reports. See the calculation section and 30-year financial data on this page for the full breakdown.

Is SDI Group (SDIIF) Overvalued in 2026?

Based on GuruFocus' analysis, SDI Group stock appears to be undervalued. The current stock price of $1.13 is trading 13.7% below its estimated GF Value™ of $1.31. GuruFocus considers SDI Group to be Modestly Undervalued.

Key valuation signals for SDIIF:

  • 3-1 Month Momentum %: -4.55%
  • GF Value™: $1.31 vs. price of $1.13 (13.7% below fair value)
  • GF Score™: 94/100 with 4 warning signs

No single metric tells the full story. See the SDIIF stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.


SDI Group Business Description

Other Exchanges SDI:UKSD0:Germany
Address Nuffield Road, Beacon House, Cambridge, GBR, CB4 1TF
SDI Group PLC designs and manufactures scientific and technology products for use by the life science, healthcare, astronomy, consumer manufacturing, and art conservation markets through Synoptics, the Artemis, the Opus instruments, and Astles Control systems brands. The Digital Imaging segment incorporates the Synoptics brands Syngene, Synbiosis, Synoptics Health and Fistreem, the Atik brands Atik Cameras, Opus, and Quantum Scientific Imaging, and the Graticules Optics business. The Sensors & Control segment combines Sentek, Astles Control Systems, Applied Thermal Control, Thermal Exchange, MPB Industries, and Chell Instruments businesses. It operates in the UK, Europe, America, Rest of Asia, and Rest of the world segments. It derives majority of its revenues from the United Kingdom.
94GF Score

Get the complete analysis for SDIIF

3-1 Month Momentum % is just one metric. See GF Value™, 30-year financials, guru trades, warning signs, and more.

$1.13
Price
$1.31
GF Value