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History & comparison

Interrogate the series, then export the evidence.

Compare every compatible public memory reference by level, base 100, or period change. Rolling windows, relative-value views, and a momentum matrix expose the same sourced observations without filling missing values.

Price comparison lab

3 products, one compatible frame

Only series with the same currency, unit, and government-reported fixed-reference basis share this frame. A blank cell means no observation—not zero.

Download selected CSVOpen JSON API
Series
View
Range
Official public ICT export releases · monthly fixed-price referencesUSD per chip
View chart data
Selected public memory fixed-price reference comparison
MonthDDR4 8Gb Die · USD/chipNAND 128Gb Die · USD/chipDDR5 16Gb Die · USD/chip
Jul 20253.93.45.3
Aug 20255.73.45.3
Sep 20256.33.796.1
Oct 202574.358.7
Nov 20258.15.1919.5
Dec 20259.35.7420.8
Jan 202611.59.4628.5
Feb 20261312.7—
Mar 20261317.7—
Apr 20261624.2—
May 20262026.5—
Jun 20262128.8—

Level preserves the exact published values. Base 100 rebases each selected product at its first visible observation so direction can be compared without implying equal absolute price.

Analytical workbench

Trend, relative value, and momentum

Three complementary views answer whether a series is accelerating, rich or cheap relative to another covered product, and where monthly momentum is concentrated.

Trailing three-observation window

Average with covered minimum and maximum

Government-reported fixed-price referenceUSD / chip · trailing window
View chart data
Trailing three-observation statistics for DDR4 8Gb Die
MonthAverageCovered lowCovered high
Jul 20252.8672.13.9
Aug 20254.0672.65.7
Sep 20255.33.96.3
Oct 20256.3335.77
Nov 20257.1336.38.1
Dec 20258.13379.3
Jan 20269.6338.111.5
Feb 202611.2679.313
Mar 202612.511.513
Apr 2026141316
May 202616.3331320
Jun 2026191621

Relative price monitor

Compatible published levels only

DDR4 8Gb ÷ / minus NAND 128GbRatio · USD/chip spread
View chart data
Relative memory price ratio and spread
MonthPrice ratioPrice spread, USD/chip
Jul 20251.1470.5
Aug 20251.6762.3
Sep 20251.6622.51
Oct 20251.6092.65
Nov 20251.5612.91
Dec 20251.623.56
Jan 20261.2162.04
Feb 20261.0240.3
Mar 20260.734-4.7
Apr 20260.661-8.2
May 20260.755-6.5
Jun 20260.729-7.8

Period-change matrix

Sequential percentage change by product; blank means no compatible prior observation

No zero fill
ProductJul ’25Aug ’25Sep ’25Oct ’25Nov ’25Dec ’25Jan ’26Feb ’26Mar ’26Apr ’26May ’26Jun ’26DDR4 8Gb+50.00%+46.15%+10.53%+11.11%+15.71%+14.81%+23.66%+13.04%+0.00%+23.08%+25.00%+5.00%NAND 128Gb+8.97%+0.00%+11.47%+14.78%+19.31%+10.60%+64.81%+34.25%+39.37%+36.72%+9.50%+8.68%DDR5 16Gb+3.92%+0.00%+15.09%+42.62%+124.14%+6.67%+37.02%—————
Sequential change in published fixed-price referenceGreen positive · orange negative · blank unavailable
View chart data
Period change matrix for public memory fixed-price references
ProductJul 2025Aug 2025Sep 2025Oct 2025Nov 2025Dec 2025Jan 2026Feb 2026Mar 2026Apr 2026May 2026Jun 2026
DDR4 8Gb Die5046.1510.5311.1115.7114.8123.6613.04023.08255
NAND 128Gb Die8.97011.4714.7819.3110.664.8134.2539.3736.729.58.68
DDR5 16Gb Die3.92015.0942.62124.146.6737.02—————
Official index context

South Korea memory producer-price indexes

A separate official index layer extends open market context without pretending to be a product quote. It never shares a USD-per-chip axis with the fixed-reference charts above.

Open ECOS sample API
MetricProducer Price Index
GeographySouth Korea
Unit2020 = 100
Latest statusProvisional
Bank of Korea ECOS · table 404Y016 · item group indexesProducer Price Index · 2020 = 100 · latest month provisional
View chart data
South Korea official memory producer price indexes
MonthDRAM Producer Price Index · 2020=100Flash Memory Producer Price Index · 2020=100
Jul 202593.7983.58
Aug 20259684.46
Sep 202598.8784.59
Oct 2025126.63119.42
Nov 2025148.74133.97
Dec 2025165.64142.07
Jan 2026247.68156.16
Feb 2026267166.07
Mar 2026317.4218.89
Apr 2026437.49219.7
May 2026478.98262.63
Jun 2026496.84293.36

These indexes measure producer-price movement for South Korean domestic supply. They are not global prices, spot or contract quotes, transaction values, vendor ASPs, or USD-per-chip observations.

Transparent index

VLSI Open Memory Basket

An equal-weight price-only basket of the complete public constituent series. Constituents, base date, and arithmetic are visible—there is no hidden weighting or proprietary input.

Latest index1438.3
Period change+6.66%
BaseJan 2025 = 100
Weights50% / 50%
VLSI Korea calculation from official public fixed referencesPrice-only index · Jan 2025 = 100
View chart data
VLSI Open Memory Basket and constituent indexes
MonthBasketDDR4 constituentNAND constituent
Jan 2025100100100
Feb 2025102.523100105.046
Mar 2025107.569100115.138
Apr 2025125.102122.222127.982
May 2025144.75155.556133.945
Jun 2025167.856192.593143.119
Jul 2025222.426288.889155.963
Aug 2025289.092422.222155.963
Sep 2025320.26466.667173.853
Oct 2025359.03518.519199.541
Nov 2025419.036600238.073
Dec 2025476.096688.889263.303
Jan 2026642.899851.852433.945
Feb 2026772.766962.963582.569
Mar 2026887.445962.963811.927
Apr 20261147.6391185.1851110.092
May 20261348.5391481.4811215.596
Jun 20261438.3291555.5561321.101

Index methodology

Reproducible by any reader

Open formula
Constituents
DDR4 8Gb die · NAND 128Gb die
Weighting
Equal weight · 50% each
Base date
Jan 2025 = 100
Calculation
Mean of each constituent's rebased price index
Rebalancing
None during published history
Interpretation
Direction of covered references—not total market value
DDR5 16Gb is excluded because its compatible public history ends in January 2026; constant basket composition is preserved through June 2026. This is a transparent price-reference basket, not an output-weighted market index, transaction index, revenue index, forecast, or investable benchmark.
Long-run activity context

Global memory-IC trade value, 2007–2024

Price history is shorter; the open-licensed trade series provides a longer activity frame without pretending customs value is a product price.

Open trade atlas
CEPII BACI V202601 · Etalab Open Licence 2.0HS 854232 · USD billion
View chart data
Annual global memory integrated-circuit trade value
YearTrade value, USD billionReported quantity, thousand tonnesReporter economies
200776.444234.9292203
200871.910879.9764197
200954.131271.6523202
201073.060277.9732206
201170.461463.2569206
201264.682454.193216
201374.548365.9146211
201496.0836924.1713211
2015100.627351.1048214
201696.853472.3587214
2017153.7856.2287212
2018180.2057154.0813211
2019152.045763.0433213
2020162.2768101.4539208
2021212.486165.2663207
2022196.327556.4725208
2023162.629347.2908209
2024214.946738.5469207

Gross bilateral customs trade is not manufacturer revenue, end-market consumption, or a price series. Reported physical quantity is incomplete and contains outliers; value is the preferred long-run comparison measure.