Invest1 distinct publisher3 min readPublished
IT operating costs rose 94.7 per cent to 28.1 billion won in the first half, but turnover grew faster still, so the cost of pushing a trillion won of orders through the platform roughly halved. The orders behind the new build carry no disclosed price.
The Investor · Invest desk

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Twenty-eight point one billion won of first-half IT operating expense set against 692 trillion won of domestic turnover works out at roughly 40.6 million won of computing cost per trillion won traded, and a year earlier, when 14.5 billion won of cost sat on top of the 87 trillion won that 695 per cent growth implies, the same ratio was near 166.7 million [7][3][1][2]. Fold in the overseas flow, 367 trillion won on 104 per cent growth [4], and the blended figure moves from about 54.3 million won per trillion to 26.5 million [3][4]. A cost line that nearly doubles while its unit cost halves is operating leverage, and it is why the same six months threw off a record 236.8 billion won of net profit [5], against which the entire IT operating bill is 11.9 per cent [6].
That leaves the opex as the less interesting half of the story. The June and August orders for DC4 network equipment and a DC4 Palo Alto firewall, reported by Seoul Economic Daily on the strength of industry sources [1], came with no values attached [14], and a data centre is capitalised or leased rather than expensed, so the doubling in IT operating cost is measuring yesterday's machines while DC4 is a claim on cash not yet spent. The one balance-sheet trace is software at 8.7 billion won, up 100.9 per cent from about 4.3 billion [8][12], a footprint too small to point to a heavy asset base.
The ratios do not back up a hardware-displacing-headcount thesis. Total selling and administrative expenses grew 92.6 per cent against IT operating cost at 94.7 per cent [9][7], a gap of 2.1 points [13], meaning the technology line barely gained share of a cost base that expanded across the board, and the commitment to keep buying GPUs as AI services widen [2] is stated as intent with no won figure behind it. If the mix were genuinely tilting toward silicon, IT would be pulling away from the rest of SG&A.
What the numbers do support is a reliability bill. Second-quarter complaints fell by half, to 34 from 69, on Korea Financial Investment Association data, while the system-failure subset more than quadrupled to 14 from three [10], so failures went from 4.3 per cent of all complaints to 41 per cent [8] as everything else dropped 69.7 per cent [9]. Kakao Pay Securities, at 20.2 billion won of IT operating cost on 65.6 per cent growth [12], logged no system-failure complaints at all even as its total went from four to 65 [11]; Toss spends about 39 per cent more [10] and has the outages. The Financial Supervisory Service is now on site examining the causes of the repeated failures and the IT internal controls [13], which reframes DC4 as remediation with a growth story attached.
A Toss official described the build as addressing the scalability limits of the existing data centre and pre-emptively expanding medium- to long-term capacity [14], and the operative word is pre-emptive: the spend is sized to a forecast of customers and product range rather than to measured load, on a base of 10 million cumulative accounts reached in July [6] that carried roughly 2,810 won each of first-half IT operating cost [11]. The conclusion could still move either way. If DC4 surfaces as an asset or lease of a size comparable to half-year profit, the capex framing holds and margin gives ground; if it surfaces as an incremental 10 to 20 billion won, this is a firm buying insurance against its own supervisor, cheaply.
Ranked by verification strength, evidence, and original report placement.
Toss Securities placed back-to-back orders in June and August this year for "DC4 network equipment" and a "DC4 Palo Alto firewall", part of work to build a new data center, according to financial investment industry sources on the 30th.
Toss Securities plans to add servers and network equipment in stages and to continue investing in graphics processing units as its AI services expand.
Toss Securities handled 692 trillion won ($497 billion) in domestic stock trading in the first half of this year, up 695% from a year earlier.
Overseas stock trading at Toss Securities rose 104% to 367 trillion won ($264 billion) in the first half.
Toss Securities net profit reached a record 236.8 billion won ($170 million).
Cumulative account holders at Toss Securities topped 10 million in July.
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Evidence-backed comparisons of source perspectives and observed adoption signals. Read the methodology
Which Builder, Operator, and Investor concerns the observed source mix emphasized—not a truth score.
Evidence, demonstrated adoption, hype gap, incentives, and confidence are assessed independently, each on its own current evidence. How these are measured.
One newsroom, two unpriced purchase orders
The financial and complaint figures have the texture of disclosure — the complaint counts are credited to the Korea Financial Investment Association, the volumes and profit read like half-year results — but the headline procurement rests on unnamed "financial investment industry sources" and carries no order value. Nothing in the account has been checked by a second outlet, and the regulator's review is reported without a word from the regulator.
Gear ordered, data center still notional
What exists is real and dated: two equipment orders three months apart, 10 million accounts by July, 1,059 trillion won of combined turnover in half a year. What does not yet exist is the facility — no site, capacity or in-service date — and the servers and GPUs that would fill it are described as staged intentions rather than commitments.
Framing runs ahead of the disclosure
The one unverifiable sentence in the story is the company's own: that this is pre-emptive capacity, "not so much an expansion to handle a short-term increase in trading volume" — offered while examiners are on site asking why the systems keep failing. Everything around it cuts the other way, including arithmetic that flatters the company: costs nearly doubled, volume grew faster, so unit processing cost roughly halved. The overstatement is narrow and confined to intent.
Two interested parties, one on the record
Toss Securities gains from recasting an infrastructure build as foresight days into a supervisory review of its IT controls, and it is the only voice quoted. Behind that, whoever inside the financial investment industry described two specific purchase orders sits close enough to the procurement to know them — which narrows the field of who benefited from the telling.
Solid on the numbers, thin on the build
Treat the volumes, profit, cost growth and complaint mix as reliable enough to reason from; treat the data center as an announcement. A single publisher, a single unnamed company voice, no priced contracts and no independent account of the failures or the review support the direction of this story but not its size.