A torrent of capital, channelled through vast, block-sized trades, has sent the Colombo Stock Exchange’s trading volumes to levels not seen in years, masking a market where fewer players are making bigger bets.
A wave of high-value, institutional-level trading has engulfed the Colombo Stock Exchange, driving weekly share volumes to a decade-high and painting a picture of a market in the grips of a dramatic, high-stakes surge.
For the week ending 10 October 2025, the total value of equity turnover rocketed to Rs. 37 billion, a substantial leap from the Rs. 33.3 billion recorded the previous week. This spike in activity was not driven by a rush of everyday retail investors, but rather by a series of colossal transactions that suggest a consolidation of power among heavyweight players.
The headline figures are staggering. The total volume of shares traded nearly doubled, exploding from 1.14 billion in the previous week to an extraordinary 1.89 billion. This level of activity dwarfs the corresponding periods in the last two years, which saw volumes of just 444 million and 374 million respectively, signalling a profound shift in market dynamics.
The All Share Price Index (ASPI) responded with a steady climb, closing at a new yearly high of 22,318.72, a solid 39.98% gain year-to-date.
A Market of Paradoxes: More Volume, Fewer Trades
Beneath this bullish surface lies a curious paradox. While the value and volume of shares traded reached a fever pitch, the actual number of transactions fell. The market recorded 174,419 trades this week, a notable decrease from the 199,936 trades of the week before. This divergence is the week’s defining feature: more money and more shares changed hands through fewer, but significantly larger, deals. The implication is clear – the market’s frenetic energy is being fuelled not by a broad-based public rally, but by institutional investors and high-net-worth individuals moving massive blocks of shares in concentrated bursts.
The engine room of this activity was overwhelmingly domestic. Sri Lankan investors were responsible for approximately 94.12% of the total equity turnover, with domestic purchases and sales totalling Rs. 34.9 billion and Rs. 34.7 billion respectively.
However, the foreign investment story is more nuanced. While foreign purchases more than doubled to Rs. 2 billion, foreign sales also climbed sharply to Rs. 2.3 billion, resulting in a net foreign outflow of Rs. 265 million for the week.
The Institutional Footprint: Giants Move in the Shadows
Nowhere was this big-money play more apparent than in the week’s ‘Crossings’ – large, negotiated transactions that take place outside the main trading board.
These crossings were a daily feature, with Commercial Bank emerging as the undisputed titan. On a single day, 9 October, the bank was the subject of four enormous crossings, including two trades of 8 million shares each at Rs. 195, valued at Rs. 1.56 billion apiece. These transactions alone underscore the institutional scale of the week’s activity. Commercial Bank’s dominance was total; it recorded the week’s highest turnover at over Rs. 7 billion and was the single biggest contributor to the ASPI’s weekly gain.
Financials Fuel the Frenzy
The surge in volume was intensely focused on a few key sectors. The Diversified Financials sector led the charge, reportedly trading an immense 2.4 billion shares. It is within this sector that the week’s most dramatic individual stock stories unfolded.
SMB Leasing became the market’s top gainer, with its share price soaring a remarkable 71.43%, while UB Finance jumped 34.48%. This sector’s performance underscores how speculative, high-volume trading defined the week. On the flip side, FC Treasuries experienced the sharpest decline, its value plummeting by 12.37%, illustrating a market driven by specific, stock-level speculation rather than a uniform tide of optimism.
The week’s trading was also marked by extreme daily volatility, dominated by a colossal spike on Thursday, 9 October, which accounted for nearly half of the entire week’s share volume.
In conclusion, the week was defined by a deluge of capital, but this was a story written by giants. The decline in the number of trades, coupled with the explosion in crossings, reveals a market being decisively shaped by institutional forces. While the benchmark indices inch upwards, the real story lies in the undercurrents of volatility and the high-stakes game being played by big money.