Selling your stock at a loss is always painful.
Taking such a decision decision takes a lot of courage.
However, difficult things have to be done if one wants to make real money in equity markets – get rid of your weak positions before they pull you down with themselves.

Today, I want to write about one such stock which I have sold at a loss – Sterlite Technologies.

Let us first look at what is good about the company

  • Sterlite Tech is one of the largest manufacturers of optical fiber preform in the world. There are only about 10 manufacturers of the preform core.
  • The company is growing phenomenally fast and expanding both – markets served and its product basket.
    Sales Growth (3 yr) = 34%
    Profit Growth (3 yr) = 54%
  • Autonomous vehicles, large-scale data centres, HD video streaming, Internet of Things (IOT) and other technologies are possible only with higher speeds and lower latency (lag) ie increased penetration of fiber optic. High data speeds with low latency are today a basic expectation of the consumer.
    Thus, fiber optic demand is a secular growth story.
  • Sterlite Tech has increased optical fiber capacity from 10 Mn fkm in 2010 to 50 Mn fkm in 2019.
  • The company has also entered network integration services and is executing massive-scale projects for the Indian Navy, Bharatnet etc.
  • Sterlite Tech also acquired Elitecore in 2016 so as to get the capability to service telecom carriers with OSS/BSS (Operating Support Systems/ Business Support Services) software services.
    Read more about this capability in this Gartner’s Magic Quadrant report for OSS/BSS service providers.
  • In 2018, Sterlite Tech also acquired a fiber optic cabling company based out of Italy to be able to gain better market access in Europe.
  • Sterlite Tech in the last few years has been able to attract global talent eg Anshoo Garg, ex-head of AMDOCS is now head of Network Software at Sterlite, Ayush Sharma the founding member of the open SDN (software defined networks) is now spearheading Programmable Networking & Intelligence at Sterlite Tech.


A good balanced analysis of Sterlite Tech may be found here


However, the backbone of the company still remains optical fiber manufacturing and most of the revenue and profits still come from this segment – especially more so with the recent capacity expansion from 30 Mn fkm to 50 Mn fkm.

Now, let us look at what the company mentions in its 2017 annual report about Market and Competition risks
Competition Risks - AR sterlite








By the company’s own admission, the market for optical fiber is extremely competitive with very low barriers for capacity expansion by existing players. This means, though it is very difficult for new players to gain access to the technology of producing optical fiber preform, it is quite simple for the existing players to expand capacity.

Sterlite Tech is a price taker and the way it is trying to overcome this risk is by expanding capacity and gaining economies of scale. We can easily extrapolate the strategy of other big players in such a competitive market – with increasing demand, the other players are also aggressively expanding capacity.

Corning opens new Manufacturing facility

Furukawa to expand capacity

Shin Itsu expands capacity in Japan & China

The market for optical fiber preform (the core) is dominated by approximately 10 players globally including China. Almost all players had announced aggressive capacity expansion projects in 2017 and 2018.

“In a commodity business, demand increase happens gradually, supply increase happens in jumps (steps).”

  1. What this means is that when demand outstrips supply making the business very profitable for the existing players, they start by expanding capacities.
    This is what happened in 2017 and 2018.
  1. All players make healthy profits and typically phase is characterized by faster increase in profits than revenues. (as seen in the financials of Sterlite Tech from 2016).
  2. New capacity comes online in large chunks and a day comes when supply again becomes larger than demand.
  3. Prices collapse and many of the weak players start losing money and the leveraged ones start going bankrupt.
  4. It takes years for the demand to again outstrip the supply and for the prices to rise and become profitable for most/all players in the industry.


We see that step 1 & 2 were playing out in calendar years 2017 and 2018.
Come 2019 and one of the large tenders for procuring optical fiber cable by China mobile saw a significant reduction in discovered prices.

China Optical Fiber prices

The Sterlite management immediately came out to emphasize that this was a temporary issue and gave elaborate reasons as to how and why it will not affect the performance of Sterlite Technologies. You may read one of the interviews by the CFO of Sterlite Technologies here.


Let us look at the numbers being reported by Chinese optical fiber producers.
YOFC which is one of the largest producers in China reported a 35% reduction in revenue in the Mar 2019 quarter.

YOFC Mar19 results - results

YOFC Mar19 results - commentary

Well, the optical fiber demand in China is 1.5 times the global demand ex-China. The management of Sterlite Technologies repeatedly opined that a “temporary demand slowdown” in China would not impact business outside China.

Now, let us look at what Corning, the company that invented the optical fiber had to say in its Conference call in Aug-19.

Slowdown 1 - Corning Con Call

This is dramatic – instead of growth which was predicted at the start of 2019, Corning now sees the market for optical fiber to show contraction.

Slowdown 2 - Corning Con Call

The weakness that started in China has now spread to India and South East Asia.
What was the impact on Indian optical fiber producers?

Aksh Optifiber, one of the players producing optical fiber based out of India defaulted on loans in May 2019. CARE ratings downgraded the company debt to D for non-servicing of debt on 27.05.2019

Aksh defaults on Debt

Step 4 is complete.
And there is a lot of data as seen above to suggest that step 5 will play out in the market.

Does the current valuation price-in all the negatives about the business, company, industry and its future?

As on 20.08.2019
Market Cap = Rs 5,410 Crs
Total Debt = Rs 2,067 Crs
Enterprise Value (EV) = Rs 7,477 Crs
Sales (12M trailing) = Rs 5,642 Crs
Operating Margins (12M trailing) = 21%

In my opinion, the operating margins could reduce to anywhere between 12% to 15%
Assuming 15% operating margins,
Operating Profits (Est) = Rs 846 Crs
EBIT (Est) = Rs 627 Crs
Thus, Sterlite Tech is trading at a valuation of
EV/EBIT (Est) = 7477/627 = 12

If the operating margins reduce to 12%,
Operating Profits (Est) = Rs 677 Crs
EBIT (Est) = Rs 458 Crs
EV/EBIT (Est) = 7477/458 = 16

In a commodity industry, with supply outstripping demand, expectation of demand de-growth and falling prices a valuation of EV/EBIT of 12 seems expensive.

The fall in profit after tax (PAT) will be even more dramatic.
The stock price chart of Sterlite Technologies suggests that the market is expecting some such thing to play out since Jan-19.

The stock price has come down by 60% just in the last 8 months.

Stock Price - Sterlite Tech


I purposefully not written about the issue of pledging of promoter shares and the shares being unencumbered later as this factor did not play a part in my decision.


This article is not a stock recommendation but an illustration of the kind of analysis that goes into fundamental research and equity investing.
I (@amey153) am a SEBI registered Investment Advisor.

8 Responses

  1. Wonderful analysis, Amey!
    Somehow, I had the same feel about this company during early 2019 because I was watching fibre business very closely.

  2. Thanks for the detailed analysis, only wish I had seen this earlier – say a year back. As, the Company appears to have moved out of the pure commodity play and is now an end to end technology company (based on the claims made by the company), do you see any difference in the business prospects?

    • Hi Sridhar
      The company is definitely trying to change the product/business mix and trying to get into areas which are not as commoditized as fiber optic pre-form.
      One of the indicators is the large number of very experienced professionals they have hired in the last 2 years from other very established and reputed companies in the domain.
      They are also trying to crack the Open-RAN market which has the potential to become huge.

      I think time will tell how much and how fast the company becomes successful in this.
      Right now, I do not have a yes/no answer to your question.

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