did tsm stock split? Full history & what it means

Short answer: Yes — did tsm stock split? Yes. TSM (TSMC ADR) has undergone ten ADR stock splits between 1998 and 2009; the most recent split was July 15, 2009 (201-for-200). This article lists each...

2026-01-14 00:52:00

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Did TSM stock split?

Yes — did tsm stock split? Short answer: yes. TSM, the NYSE American Depositary Receipt (ADR) for Taiwan Semiconductor Manufacturing Company (TSMC), has undergone multiple stock splits during its trading history in the U.S. markets. In total, ten ADR splits are recorded between 1998 and 2009, with the most recent split executed on July 15, 2009 (a 201-for-200 split).

This article answers the question "did tsm stock split" in full detail. You will find an itemized, chronological split list, an explanation of ADR mechanics and how splits are handled for ADR holders, guidance on verifying and adjusting historical prices, investor implications, and practical next steps using Bitget resources. The goal is to give beginners a clear, sourced and actionable reference.

Company and ticker identification

Taiwan Semiconductor Manufacturing Company (TSMC) is the world's largest dedicated semiconductor foundry. In the U.S. market, TSMC trades as an American Depositary Receipt under the ticker TSM. The ADR structure allows U.S. investors to hold and trade shares that represent underlying ordinary shares listed on the Taiwan Stock Exchange (TWSE: 2330). Historically, TSMC ADRs were first listed on the NYSE in 1997, and ADR issuance and corporate actions are administered by the ADR depositary bank (historically Citibank for many TSM ADR programs).

Investors asking "did tsm stock split" are typically checking (1) whether the share count or price history changed due to a corporate split, (2) whether their brokerage records will reflect the split, and (3) how to interpret split-adjusted price charts.

Summary of TSM (TSMC) stock-split history

High-level summary:

Total recorded ADR splits: 10
Time span for ADR splits: 1998 through 2009
Cumulative effect: multiple incremental increases in outstanding ADR units per ADR holder over the split sequence. While each split modestly increased share counts, the cumulative effect benefits early shareholders by increasing the number of ADR units they hold (and decreasing the per-ADR price) while leaving total market value unchanged.

Chronological list of splits (dates and ratios)

Below is a concise chronological list of the ADR splits recorded for TSM (dates and declared ratios). Each ratio is shown in the reported format and as a decimal multiple for clarity.

Aug 26, 1998 — 145-for-100 (1.45×)
Aug 16, 1999 — 123-for-100 (1.23×)
May 15, 2000 — 128-for-100 (1.28×)
Jun 26, 2001 — 140-for-100 (1.40×)
Jun 19, 2002 — 11-for-10 (1.10×)
Jul 07, 2003 — 108-for-100 (1.08×)
Jun 14, 2004 — 114-for-100 (1.14×)
Jun 13, 2005 — 105-for-100 (1.05×)
Jun 20, 2006 — 103-for-100 (1.03×)
Jul 15, 2009 — 201-for-200 (1.005×) — the most recent ADR split

Taken together, these ten events are the splits investors reference when they ask "did tsm stock split." Each was designed to increase the number of ADR units outstanding for existing ADR holders per the depositary’s rules.

(Note: the list above reflects ADR split events recorded for the U.S. ADR program. The ordinary shares listed on the Taiwan Stock Exchange have their own corporate-action history and may show other splits or share consolidations; cross-checking both listings is useful for a complete picture.)

Corporate reasons and timing for splits

Why do companies split shares? Common corporate motivations include:

Improve affordability: reducing the per-share price can make shares more accessible to retail investors.
Increase liquidity: more shares outstanding and a lower price per share can support higher trading volumes and tighter spreads.
Align compensation and option plans: share-based compensation and option strike pricing can be easier to manage with smaller per-share prices.

When people ask "did tsm stock split" they often want to know whether a management decision changed accessibility or liquidity. For TSMC, the splits recorded from 1998 through 2009 were consistent with these common motives during a period of rapid company growth and rising share prices. The company has not publicly committed to a schedule of future splits; corporate action timing is determined by the board based on market and strategic considerations.

Effect on shareholders and share accounting

Important points for shareholders when considering "did tsm stock split":

No change in ownership percentage: a stock split increases the number of shares held but does not change an investor’s proportional ownership of the company (unless fractional-share handling policies alter small holdings slightly).
No change in total market capitalization: market cap is unchanged by the split at the moment it becomes effective (price per share falls proportionally to the increased share count).
Brokerage and ADR depositary handling: for ADRs, the depositary bank and brokers handle record adjustments. ADR holders should see updated balances in their brokerage or custodial accounts reflecting the split ratio on the holder-of-record date.
Fractional ADRs: if the split results in fractional ADRs for a holder, the depositary or broker typically arranges cash-in-lieu payments for fractional entitlements per depositary rules; the policies can vary and are described in ADR program documentation.

If you’re an ADR holder and still asking "did tsm stock split" for a past date, check your broker account history or the depositary’s communications for official allocation and cash-in-lieu details.

ADR specifics, U.S. listing and differences from Taiwan listing

Key ADR mechanics relevant to "did tsm stock split":

ADRs represent underlying ordinary shares listed on TSMC’s primary market (Taiwan Stock Exchange). Each ADR is backed by a specified number of ordinary shares, or a fraction thereof, depending on the ADR program terms.
Corporate actions such as stock splits, dividends and consolidations on the underlying ordinary shares typically require parallel action by the ADR depositary to reflect the event on ADRs traded in the U.S.
ADR depositary bank role: the depositary administers the ADR program and communicates split ratios, record dates and payment arrangements to ADR holders and brokers.

For U.S. investors asking "did tsm stock split," it’s important to realize that split announcements for ordinary shares are typically mirrored by ADR adjustments, but the precise handling (timing, ratio on ADRs vs ordinary shares) is governed by depositary documentation and the ADR contract.

As of 2026-01-22, according to TSMC investor relations materials and depositary program FAQs, ADR adjustments historically followed the company’s ordinary-share splits with instructions issued by the depositary to brokers and holders. Always consult your brokerage or the depositary’s communications for exact allocation details when a split occurs.

How to verify splits and adjust historic prices

If you’re verifying "did tsm stock split" for research, tax records, or price-charting, use these authoritative sources and steps:

Company investor relations and official announcements: the primary source for split declarations, effective dates, and ratios.
ADR depositary communications and FAQs: these specify how ADR holders are treated and any cash-in-lieu rules.
Regulatory filings: check filings submitted to securities regulators (e.g., SEC filings for ADRs) for confirmations and formal notices.
Historical split databases and market-data providers: sources such as major finance sites and split-history aggregators maintain split event lists and adjustment factors.
Broker and data-provider price series: ensure you use split-adjusted price series if you need continuous historical performance (many charts offer an option to show split- and dividend-adjusted prices).

Procedure to adjust prices manually:

If you need to adjust a pre-split price, divide (or multiply) the historical price by the cumulative split factor up to the date in question. For multiple splits, multiply the individual split ratios together to get a cumulative adjustment factor.
Confirm that your price series is or is not already adjusted. Most major charting platforms have a toggle for split-adjusted prices.

When checking "did tsm stock split," confirm the event date, ratio, and whether your data source already applied the adjustment so you don’t double-count.

Investor implications and considerations

What investors should know when researching "did tsm stock split":

A split is not a fundamental change: it does not change revenue, cash flow, or business prospects. Any change in market value after a split reflects market perception, not the split itself.
Short-term retail interest: splits can increase retail visibility and trading activity, which may temporarily affect volume and volatility.
Options and derivatives: splits change option contract sizing or strike conventions; options exchanges and brokers adjust positions according to standard procedures. If you trade options on TSM or related instruments, check with your broker for post-split adjustments.
Taxes: generally, splits are non-taxable events in most jurisdictions because they do not change an investor’s total economic stake. Consult a tax professional for specific tax-treatment questions.

Remember that asking "did tsm stock split" is often the first step; the next step is checking how your holding record and cost basis will be reported by your broker if you were a shareholder at the split dates.

Comparison with other major semiconductor stock-split activity

Stock splits are common among large-cap growth and technology companies that see rapid price appreciation. To put TSM’s activity in context:

Like many high-growth semiconductor and tech firms, TSMC executed multiple splits over periods of rapid share-price appreciation to keep shares accessible to retail investors.
Other well-known large-cap companies (across sectors) have used splits to manage per-share price levels. Each company’s policy and frequency differ, reflecting board priorities and market conditions.

As you research "did tsm stock split," comparing split cadence across peers can provide context but not necessarily predictive power for future splits.

Frequently asked questions (FAQ)

Q: When was TSM’s last split?
A: The most recent recorded ADR split for TSM occurred on July 15, 2009 (201-for-200). If you ask "did tsm stock split" with reference to that timeframe, the answer is yes — that was the last ADR split recorded.

Q: Did TSMC ordinary shares on the Taiwan exchange split on the same dates?
A: ADR splits are generally coordinated with ordinary-share actions, but the exact formats and timing can differ. Consult both TSMC investor relations and the ADR depositary communications for parallel event confirmations.

Q: Does a split change my ownership percentage?
A: No. A split increases the number of shares you hold while proportionally reducing the per-share price; your percentage ownership of the company remains unchanged.

Q: Where can I find official announcements about splits?
A: Official company investor-relations releases, ADR depositary notices, and regulatory filings are authoritative. Broker confirmations and account statements also record how splits were applied to your holdings.

Q: How do I confirm whether a historical price series is split-adjusted?
A: Check the charting platform or data provider’s documentation. Many providers let you toggle between split-adjusted and unadjusted series; if unsure, verify by comparing price jumps around known split dates.

Practical checklist if you held TSM/TSMC stock around a split date

Check broker account activity for the record date and the effective date.
Review depositary communications if you held ADRs directly through a custodian.
Confirm cash-in-lieu policies for fractional ADRs.
Update personal cost-basis records if required (note that cost basis per share will change because you now hold more shares).
If you trade options, confirm contract adjustments with your broker.

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How to interpret "did tsm stock split" across data sources

When cross-checking sources for the query "did tsm stock split," keep these tips in mind:

Source hierarchy: company investor relations and depositary notices are primary. Market-data aggregators and financial news sites are secondary; they compile events but rely on primary disclosures.
Date alignment: ensure you’re looking at the ADR program (U.S. ticker TSM) rather than an unrelated domestic listing when verifying ADR splits.
Cumulative factor: when reconstructing long-term returns, multiply the sequence of split ratios to compute the cumulative adjustment factor.

As of 2026-01-22, according to TSMC investor resources and historical split databases, the ADR program recorded the ten splits listed earlier in this article.

References

(Note: reference names below indicate the primary sources used to compile the split history and explanations; please consult the issuer’s investor-relations materials and depositary program documents for authoritative corporate-action text.)

TSMC Investor Relations — company investor communications and ADR/ordinary-share FAQs (issuer disclosures and program FAQs)
Macrotrends — historical stock split database and split chronology for TSM
SplitHistory — aggregated stock split event listings for TSM
StockSplitHistory — historical split records and event dates
Yahoo Finance — TSM historical events and corporate-action summary
The Motley Fool — explanatory article on ADRs and split mechanics
CompaniesMarketCap / market-data aggregators — overview pages summarizing company listing details and ticker cross-references
DivvyDiary — split history summaries and adjustment guidance

(Each of the above sources compiles corporate-action data used widely by investors; for official legal effect, rely on company filings and depositary notices.)

External resources and next steps (Bitget focused)

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If you want a practical next step after confirming "did tsm stock split," review your brokerage account statements for allocation changes and update your records. Use Bitget’s educational resources to learn how corporate actions are reflected in account statements and tax records.