PT Garuda Maintenance Facility Aero Asia Tbk (ISX:GMFI) Predictability Rank

Author: Vera Yuan Vera Yuan
Vera Yuan
Vera Yuan
Director of Data and Quant Analytics at GuruFocus
Focused on building reliable datasets, financial models, and research tools for value-minded investors. Committed to turning complex data into practical guidance for value-investing and long-term wealth.
Reviewed by: Charlie Tian Charlie Tian
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.

ISX:GMFI PT Garuda Maintenance Facility Aero Asia Tbk ISX:GMFI
78 GF Score
Price Rp55.00
GF Value Rp32.62
Valuation Significantly Overvalued
! 2 Warning Signs
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What is PT Garuda Maintenance Facility Aero Asia Tbk Predictability Rank?

1 (5)

Warren Buffett said many times that the companies he likes are:

1. Simple businesses that he understands
2. that have predictable and proven earnings and
3. with economic moat
4. those can be bought at a reasonable price.

It is hard to quantify "simple businesses that he (Buffett) understands", so we will focus on the other three characteristics instead. In GuruFocus Research: What worked in the market from 1998-2008? Part I: Introduction of Predictability Rank, we will show that the businesses that have predictable and proven earnings are usually also simple businesses that an average person could understand.

GuruFocus conducted a back test study of Warren Buffett's strategy of "buying good companies at fair prices" for the years from 1998-2008.

PT Garuda Maintenance Facility Aero Asia Tbk Predictability Rank Related Terms

ISX:GMFI
78GF Score
PT Garuda Maintenance Facility Aero Asia Tbk ISX:GMFI
Predictability Rank is just one metric. See GF Score™, valuation, warning signs, and more.
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PT Garuda Maintenance Facility Aero Asia Tbk Predictability Rank Calculation

In our database there are 2403 stocks that have been traded from Jan. 2, 1998 to Aug. 31, 2008. We have the complete 10-year financial data and trading prices of these companies for this period. We rank the predictability of these companies based on the consistency of their revenue per share and EBITDA (earning before interest, tax, depreciation and amortization) per share over the past ten fiscal years, and study the correlation between the stock performances and the predictability of the business.

Our study may be subject to these biases and assumptions:

Dividend yields are not counted for investment returns
Effects of price changes due to spin-offs may not be fully adjusted
Study is subjected to survivorship bias due to de-listing, bankruptcy, LBO, M&A, etc.

The correlation between business predictability and investment returns of a company is showed below.

Correlation Between Business Predictability and Investment Returns

PredictablesNon-PredictableAll stocks
Total Number of stocks57018332403
Total Lost Money61830891
Total Lost More Than 50%18412430
Total Lost More Than 90%48690
Average Gain260.6%100.0%138.1%
Median Gain150.0%13.0%39.0%
Maximum Gain2852.0%11483.0%11483.0%
Maximum Loss-100.0%-100.0%-100.0%
Annualized Average Gain12.7%6.7%8.4%
Annualized Median Gain8.9%1.1%3.1%


















For the 570 predictable companies, we have seen strong correlation between the predictability of businesses and the stock performances over the past 10 years, regardless of the valuation of business at 1998. Accordingly, we have ranked the business predictability from 5-star to 1-star, as shown in this table.

Predictability Rank5-Star4.5-Star4-Star3.5-Star3-Star2.5-Star2-Star1-Star (non-predictable)Average among all
% Out of All 2403 Stocks 3.3% 2.9% 3.7% 3.3% 3.3% 3.7% 3.3% 76.3% 100%
% that are in Loss (10y) 3% 10% 8% 9% 11% 18% 16% 45% 37%
Average Gain (10y) 364.6% 330.9% 278.0% 235.1% 243.5% 227.8% 154.8% 100.0% 138.1%
Median Gain (10y) 238.5% 193.5% 171.0% 159.0% 132.5% 113.5% 87.0% 13.0% 39.0%
Maximum Gainer 2228.0% 2547.0% 2452.0% 2852.0% 2432.0% 1892.0% 1807.0% 11483.0% 11483.0%
Maximum Loser -82.0% -53.0% -67.0% -100.0% -83.0% -100.0% -78.0% -100.0% -100.0%
Annualized Average Gain 15.4% 14.6% 13.2% 12.0% 12.2% 11.7% 9.1% 6.7% 8.4%
Annualized Median Gain 12.1% 10.6% 9.8% 9.3% 8.2% 7.3% 6.0% 1.1% 3.1%
















For detailed information about each predictability rank, please go to GuruFocus Research: What worked in the market from 1998-2008? Part I: Introduction of Predictability Rank

Also read:

Part II: What worked in the market from 1998-2008? Part II: Role of Valuations
Part III: Intrinsic Value, Discounted Cash Flow and Margin of Safety

Is PT Garuda Maintenance Facility Aero Asia Tbk (ISX:GMFI) Overvalued in 2026?

Based on GuruFocus' analysis, PT Garuda Maintenance Facility Aero Asia Tbk stock appears to be overvalued. The current stock price of Rp55.00 is trading 68.6% above its estimated GF Value™ of Rp32.62. GuruFocus considers PT Garuda Maintenance Facility Aero Asia Tbk to be Significantly Overvalued.

Key valuation signals for ISX:GMFI:

  • Predictability Rank:
  • GF Value™: Rp32.62 vs. price of Rp55.00 (68.6% above fair value)
  • GF Score™: 78/100 with 2 warning signs

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

PT Garuda Maintenance Facility Aero Asia Tbk Business Description

Address PT Garuda Maintenance Facility Aero Asia Tbk, 2nd Floor, South Lobby Hangar 4, Soekarno-Hatta International Airport Office Area, Pajang Village, Benda District, Tangerang, IDN, 15125
PT Garuda Maintenance Facility Aero Asia Tbk is an Indonesia-based aircraft maintenance company. The company offers various services including line maintenance, base maintenance, component services, engineering services, components maintenance and calibration, material services, logistics, cabin maintenance services, and other services. The company also offers consulting services, training, and provision of experts in the field of aircraft maintenance, components, and engines. The company's operating segments are repairs and maintenance airframe, engine, and component segment, which is the revenue driver for the company; Line maintenance and technical ground handling segment; and other operations.
78GF Score

Get the complete analysis for ISX:GMFI

Predictability Rank is just one metric. See GF Value™, 30-year financials, guru trades, warning signs, and more.

Rp55.00
Price
Rp32.62
GF Value