Stock Market This Week Sees Big Moves—Check the Top Gainers and Losers

Volatile Week for Indian Markets: A Mixed Bag of Gains and Losses

Mumbai, June 21, 2025 — The Indian stock market experienced sharp swings throughout the week, driven by global cues, sector-specific developments, and profit booking at higher levels. While benchmark indices ended the week on a cautious note, several stocks from the mid-cap and small-cap segments witnessed significant movement, offering mixed fortunes to investors.

The Nifty 50 and Sensex oscillated within a volatile range, ultimately posting a marginal weekly decline of 0.4% and 0.6% respectively. Investor sentiment was dented by renewed fears of global rate hikes, a dip in foreign institutional investor (FII) activity, and rising crude oil prices.

Let’s take a look at this week’s top gainers and losers, along with expert insights into what drove these moves.

Top Gainers of the Week

1. Aeroflex Industries | +21.5%

The standout performer this week, Aeroflex Industries, continued its bull run following upbeat institutional interest and positive analyst commentary. Market buzz suggested accumulation by marquee investors, including value-based fund managers. The stock closed the week at ₹186, up from ₹153.

“Aeroflex’s strong export order book, margin expansion, and scalable business model have made it an attractive small-cap bet,” said Vinit Sinha, AVP, Monarch Networth.

2. Hindustan Copper | +18.2%

A surge in global copper prices fueled investor interest in Hindustan Copper, helping it rally nearly 18%. Expectations around China's infrastructure stimulus also bolstered sentiment in base metal counters.

3. Vodafone Idea | +14.7%

VI continued its upward momentum as talks of potential government relief measures and a successful equity infusion plan dominated headlines. Speculative interest further pushed the stock higher.

4. Mazagon Dock Shipbuilders | +12.6%

Defense and shipbuilding stocks rallied on reports of new government contracts and upcoming projects. Mazagon Dock benefited from this positive sentiment and saw strong institutional buying.

5. Zee Entertainment Enterprises | +11.1%

Despite ongoing concerns about the failed Sony merger, Zee rebounded strongly amid speculation of new M&A talks and board-level changes.

Top Losers of the Week

1. Delta Corp | -15.3%

The gaming and hospitality major plummeted as regulatory uncertainty intensified after reports of stricter taxation under GST. Weak Q1 outlook added further pressure.

2. Paytm (One 97 Communications) | -13.8%

Paytm saw a selloff post a downgrade by a leading brokerage, citing slowing growth in loan disbursements and increasing competition from fintech rivals. Concerns also lingered around regulatory scrutiny of its lending partners.

3. Adani Total Gas | -11.9%

Part of the broader correction in Adani Group stocks, Adani Total Gas fell after a lukewarm investor update and concerns about revenue visibility amid volatile LNG prices.

4. Biocon | -10.4%

Biocon declined due to delays in approvals for key biosimilars and margin pressures in its generics business. The company’s quarterly performance also missed street estimates.

5. Shree Cement | -9.7%

Cement stocks, in general, underperformed due to higher input costs and muted demand in North India. Shree Cement was one of the worst hit among large caps.

Sectoral Performance: A Mixed Trend

While metal and defense stocks led the rally, IT, FMCG, and pharma stocks saw muted to negative performance.

• The Nifty Metal index rose nearly 4.2%, riding on rising commodity prices and demand forecasts.

• The Nifty IT index declined by 1.5% due to persistent concerns about client budget cuts and global slowdown fears.

• The Nifty FMCG index slipped 0.8%, as input cost inflation is expected to impact margins.

Analyst Take: What’s Driving Market Volatility?

Global market cues played a major role this week, with the U.S. Fed’s hawkish tone rattling emerging markets, including India. Bond yields spiked, and crude oil prices hovered near $85 per barrel, rekindling inflation worries.

“Investors are reassessing valuations as we near the Q1 earnings season. A selective approach towards quality mid-caps and defensive large-caps seems to be the preferred strategy,” said Priyanka Bansal, Head of Research at Emkay Global.

Investor Outlook: What to Watch Next Week

• June F&O expiry on Thursday is expected to bring heightened volatility.

• Eyes will also be on the monsoon progress, as rainfall trends will impact agri-related stocks and FMCG consumption.

• Globally, the U.S. GDP data, and updates from ECB and BoE will shape investor risk appetite.

Short-term traders are advised to remain cautious and avoid leverage, while long-term investors can look at corrections in quality names as buying opportunities.

“This is a market where resilience will be rewarded. Stick to companies with sound cash flows, healthy governance, and low debt,” recommends Rajiv Mehta, Portfolio Manager at Quantum AMC.

The Indian equity market this week painted a picture of resilience amid uncertainty. As profit-taking dragged down some counters, others—particularly in niche growth areas—managed to attract fresh buying. In a climate where narratives shift rapidly, staying informed and diversified remains key for retail and institutional investors alike.