Pulse of the Flow: Leading Brokerage Houses at Borsa Istanbul as of 15:00

As the second half of the trading day commences at Borsa Istanbul, trading volume data capturing the pulse of market makers and domestic investors clarifies the direction of capital flows. The buy-sell data finalized around 15:00 generates critical signals regarding the positions of liquidity providers in the index. The list of most active brokerage houses stands as one of the most concrete indicators determining the market's short-term trajectory.

Institutional Movement Centered on Liquidity

The depth in the index futures and spot markets is shaped according to the portfolio management strategies of specific brokerage houses. The data flow reveals the following dynamics:

■Leadership in trading volume is not being relinquished by key market players.

■Concentration on the buy side indicates an acceleration in rotation within the index.

■Even in segments where selling pressure is observed, the total trading volume hovering at billions of lira signals that market depth is preserved.

Market Depth and Algo-Trading Signals

In this time frame where automated trading robots kick in, the order flow velocity of market maker institutions emerges as the primary factor determining volatility.

■Volume increase coincides with recovery buys from critical regions of the BIST 100 index.

■High-frequency trades indicate a sectoral rotation stock-specific rather than across the index generally.

Caner Yılmaz Analysis: The institutional concentration in the 15:00 data tests whether sustainability above the short-term Ichimoku cloud (Tenkan-sen) can be maintained. If volume leaders maintain their positions on the buy side, an upward momentum starting from the Fibonacci 0.618 retracement level will likely be confirmed with high probability. The concentration of flow in such specific firms indicates strong market maker liquidity but also suggests that stop-loss levels should be tightened against manipulative sell waves.