The PSEi-ICTSI Show, Part III: The Fulcrum Cracks—Benchmark-ism Unravels

 

You can't do well in investments unless you think independently. And the truth is, you're neither right nor wrong because people agree with you. You're right because your facts and your reasoning are right. In the end, that's all that counts. And there wasn't any question about the facts or reasoning being correct—Warren Buffett 

In this issue: 

The PSEi-ICTSI Show, Part III: The Fulcrum Cracks—Benchmark-ism Unravels

I. Ghost Month, Real Losses

II. The ICTSI Fulcrum Cracks

III. Breadth Confirms the Divergence

IV. From Prop to Drag: The Mechanics of Concentration in Reverse

V. Rotation Without Broadening: Speculative Capital in Search of the Next Punt

VI. The Arrière-Pensée: Confidence Is the Cover Story, Collateral Is the Point

VII. Conclusion: Benchmark-ism Meets Its Own Arithmetic 

The PSEi-ICTSI Show, Part III: The Fulcrum Cracks—Benchmark-ism Unravels 

When one stock becomes the market, its reversal becomes the market's problem: August exposes the concentration, liquidity, and benchmark-ism beneath the PSEi's manufactured confidence 

In Part I we flagged ICTSI as the PSEi 30's single point of vulnerability. In Part II we showed how that vulnerability had metastasized into concentrated liquidity, shrinking participation, and outright benchmark-ism. August supplied the arithmetic Part II warned was coming. 

I. Ghost Month, Real Losses

Figure 1

August is conventionally excused as the market's "ghost month"—a superstition with Chinese roots, ironically applied by the establishment commentaries to a market that isn't Chinese. The historical record hardly justifies the fear: from 2010 through 2025, August produced gains in only six of sixteen years, with an average loss of a marginal -0.33%. Mostly noise. (Figure 1, upper window)  

This August wasn't noise. The PSEi 30 fell 4.49% month-on-month—the fourth-largest monthly loss since 2010—dragging the year-to-date return to roughly -1.60% and the year-on-year figure to -3.24%. (Figure 1, lower table)

Figure 2 

The damage was compressed: a single closing week's 4.52% plunge erased three months of the index's ICTSI-driven advance. (Figure 2, upper image) 

Ghost month or not, the mechanism behind the reversal is the one this series has tracked for some time, but which intensified last June: ICTSI had become the fulcrum propping up the PSEi 30, and a fulcrum that lifts a benchmark on the way up can just as easily accelerate its fall. 

The timing again matters. 

The final week's plunge did not arrive in isolation. 

On Friday, the USDPHP closed at Php 62.265, a record, extending Thursday's prior record-low close of Php 61.888. Markets were also absorbing the BSP's latest policy signals, and the 7-month record fiscal and trade deficits. (Figure 2, lower chart) 

The PSEi 30 fell in lockstep, down for a fourth consecutive session and closing below 6,000, erasing gains since June. 

A rate hike aimed at defending the currency and a benchmark sliding on the same day are not coincidences to be filed separately from the ICTSI story. They are another expression of the same "resistance to adjustment" pattern this (stagflation) series has tracked across fiscal, monetary, and FX-regime policy: administrative efforts to keep the peso, the yield curve, and the index from clearing at levels the underlying imbalances would otherwise dictate. 

When that resistance gives way on the currency side, it rarely leaves the equity side untouched—not when equity "confidence" was doing double duty as collateral support in the first place. 

II. The ICTSI Fulcrum Cracks 

The same stock that manufactured the June-July rally supplied most of August's decline. ICTSI fell 7.86% week-on-week and 8.1% month-on-month, accounting for roughly 46% and 48%, respectively, of the PSEi's weekly and monthly losses. 

This is simply capitalization-weighting running in reverse. The identical arithmetic that let one company's 57% first-half return mask a negative-6.8% average constituent return in Part II is now transmitting one company's reversal directly into the headline index. 

A benchmark built to amplify a single stock's ascent is, by the same construction, built to amplify its descent.

Figure 3

ICTSI's share of the PSEi's free-float market cap slipped to 25.58% by month's end, down from a peak of 27.37% in the first week of August. (Figure 3, upper pane)         

The combined weight of the top five constituents eased from July's peak of 56.12% to about 54.7%. 

Small retreats in percentage terms—large in what they signal: the "national team" support that Part II documented in the daily trading choreography appears to be losing its grip on the tape. 

III. Breadth Confirms the Divergence 

Beneath the headline, the market's breadth told a different story from the index. 

Only 10 of the PSEi's 30 constituents rose in August; the average constituent decline was roughly -2.92%—materially less than the benchmark's -4.49%, as ICTSI's outsized free-float market-cap weight amplified its decline in the headline index. (Figure 3, lower visual)

Figure 4

The divergence was even more pronounced during the final week's meltdown: only 7 of the 23 constituents that traded that week rose, while the average change was -2.78%—another example of how free-float market-cap weighting magnified the impact of ICTSI's decline on the benchmark. (Figure 4, upper diagram) 

Exchange-wide breadth stayed only marginally negative—1,783 advances against 1,818 declines—a spread nowhere near as lopsided as the ICTSI-driven index move would suggest. (Figure 4, lower image) 

That gap between a nearly even advance-decline line and a sharply negative benchmark is itself the tell: the index and the market it purports to summarize are increasingly telling two different stories, exactly as Part II's mid-year data showed in reverse. 

IV. From Prop to Drag: The Mechanics of Concentration in Reverse

Figure 5 

The unraveling wasn't confined to price. It showed up in the plumbing of trading activity too. ICTSI's % share of Main Board volume fell sharply from 28.23% in July to 21.91% in August as foreign flows shifted from net buying (Php 5.265B in July) to net selling (Php 1.59B in August). (Figure 5, upper graph) 

The same expansion in ICTSI's trading dominance that Part II attributed to both rising ICTSI activity and shrinking activity elsewhere is now reversing on both counts at once: as ICTSI volume recedes, there is no offsetting pickup in the rest of the market to cushion the loss of liquidity. 

The pattern increasingly resembles South Korea's KOSPI, where Samsung and SK Hynix now function as the index in practice. The difference is that Korea's concentration rides a global AI-hardware cycle with real earnings behind it; ICTSI's had no comparable confirmation from global port-operator peers, a point already established in Part II. (Figure 5, lower chart) 

Main Board volume fell 17.24% year-on-year to about Php 113.108 billion; aggregate turnover fell 4.5% to Php 142.976 billion. Cross trades made up 18.74% of Main Board volume, a four-month high—more of the exchange's already-shrinking activity conducted off the central order book, away from open price discovery. 

V. Rotation Without Broadening: Speculative Capital in Search of the Next Punt 

As the dominant ICTSI trade weakened, the other big caps failed to fill the gap—or the expected ‘rotation’ didn’t happen. Instead, trading activity shifted toward smaller, more speculative names—restructuring rumors, backdoor-listing chatter, M&A gossip—even as overall volume contracted. 

Near-even breadth on falling volume is not a healthy broadening of participation. It looks more like speculative capital searching for the next short-term story once the previous market leader loses momentum, not new capital entering the market on improved fundamentals. 

The extraordinary ICTSI ascent that carried the PSEi through June and July appears to have reached its inflection point. What follows this kind of top is rarely a broad-based handoff to the rest of the index; it's usually a scramble among smaller, thinner names while the index itself searches for a new prop. 

The progression is telling: from speculation to outright gambling, as capital searches less for value than for the next trade capable of replacing the momentum it has lost—more recipe for capital consumption. 

VI. The Arrière-Pensée: Confidence Is the Cover Story, Collateral Is the Point 

In Part II, we named this dynamic “benchmark-ism”: political and institutional narrative management that uses market and economic statistics to manufacture the appearance of stability—or to keep the Overton window of acceptable economic outcomes from shifting toward adjustment. 

August is the moment that narrative met its own arithmetic. 

Gains have always been projected as "confidence"—a rising PSEi as evidence of "resilience," useful for a leadership with sagging approval ratings and an economy absorbing the mounting tensions from the aftershocks of the Iran-war oil shock, EO 110's price-suppression architecture, and a cascade of BSP relief measures already tracked in this series. But confidence was never the only objective, and arguably not the primary one. 

Elevated equity prices are collateral. They support asset values on bank and corporate balance sheets, cushioning a financial system already leaning on the BSP's regulatory relief and foreign-exchange interventions to keep the credit cycle turning. 

Put bluntly: a rising PSEi, and specifically a rising ICTSI, was never just about optics. It was about propping up the collateral base that a decaying credit cycle depends on to keep rolling over. That is the arrière-pensée behind the applause Part II described—the second, unstated motive sitting behind the first. 

The trouble with using one stock as collateral infrastructure for an entire financial system is that the mechanism is symmetric. 

What inflates the collateral on the way up can deplete it on the way down, potentially at a leveraged pace 

August didn't just cost the PSEi 4.49%. It cost the system a slice of the very collateral cushion the whole exercise was designed to build. 

VII. Conclusion: Benchmark-ism Meets Its Own Arithmetic 

This isn't the first time a single Philippine equity story has been mistaken for—or dressed up as—a market. The DigiPlus [PSE: PLUS] gaming-stock bubble of 2025 ran on the same logic: a policy-fueled speculative vehicle inflated past any relationship to its fundamentals, celebrated rather than examined, until the arithmetic of momentum reversed on its own. 

We called that top in real time and traced its roots back to the same boom-bust pattern that took down BW Resources in 1999. 

ICTSI is a larger, more systemically consequential version of the same mechanism—dressed in blue-chip legitimacy instead of casino-stock notoriety, but running on identical fuel: concentrated, momentum-driven flows mistaken for confidence. 

• Part I called ICTSI the PSEi's single point of vulnerability. 
• Part II showed that vulnerability metastasizing into concentrated liquidity and narrative management.
• Part III shows what happens when the fulcrum that was doing the lifting starts doing the dropping instead. 

The PSEi was supposed to represent the market. But once the representation itself becomes something to be managed—because it communicates confidence and supports financial conditions—it begins to substitute for the reality it was meant to represent. That is the simulacrum. 

The episode reconfirms why the PSEi is becoming an increasingly unreliable gauge of the broader Philippine equity market—and, equally, a more fragile one: susceptible to substantial mispricing, disproportionate liquidity exposure, asset-bubble formation, rising concentration risk, and hidden leverage. 

Benchmark-ism can manufacture confidence for a while. It cannot repeal the arithmetic of the index it's built on.

___

References:

Prudent Investor Newsletters, The PSEi-ICTSI Show, Part II: When One Stock Becomes the Market, July 19,2026 

Prudent Investor Newsletters, PSEi 30: The ICTSI Show, June 7, 2026