Ruane, Cunniff & Goldfarb L.P. — TAIWAN SEMICONDUCTOR MANUFAC TSM: Quarterly 13F Position History
Ruane, Cunniff & Goldfarb L.P. has reported TAIWAN SEMICONDUCTOR MANUFAC (TSM) on 26 13F-HR filings in Pactolio's tracked window, first appearing in Q4 2019. As of Q1 2026, the position is sized at 1,208,419 shares ($408.4M market value, 6.77% of the equity book). Quarter-over-quarter share count change: 213,302 (-15.0%) .
- 1,208,419Shares Held (Latest Filing)
- $408.4MReported Market Value (Latest Filing)
- 6.77%Portfolio Weight (% of 13F Equity Book)
- 213,302Quarter-over-Quarter Share Change
- -$23.7MQuarter-over-Quarter Value Change
- 7,070,792Peak Reported Shares (Historical)
Quarterly 13F-HR Disclosure History Source: SEC 13F-HR filings, 26 quarter s
| Quarter | Shares | QoQ Share Change | Share Change (%) | Market Value | Weight | Implied Price |
|---|---|---|---|---|---|---|
| Q1 2026 | 1,208,419 | 213,302 | -15.0% | $408.4M | 6.77% | $337.95 |
| Q4 2025 | 1,421,721 | 460,000 | -24.4% | $432.0M | 6.75% | $303.89 |
| Q3 2025 | 1,881,721 | 35,960 | -1.9% | $525.5M | 8.71% | $279.29 |
| Q2 2025 | 1,917,681 | +51,388 | +2.8% | $434.3M | 7.45% | $226.49 |
| Q1 2025 | 1,866,293 | 67,588 | -3.5% | $309.8M | 5.63% | $166.00 |
| Q4 2024 | 1,933,881 | 970,808 | -33.4% | $381.9M | 6.48% | $197.49 |
| Q3 2024 | 2,904,689 | 119,034 | -3.9% | $504.5M | 7.89% | $173.67 |
| Q2 2024 | 3,023,723 | 692,927 | -18.6% | $525.6M | 8.19% | $173.81 |
| Q1 2024 | 3,716,650 | 353,629 | -8.7% | $505.7M | 7.85% | $136.05 |
| Q4 2023 | 4,070,279 | 125,036 | -3.0% | $423.3M | 6.77% | $104.00 |
| Q3 2023 | 4,195,315 | 128,621 | -3.0% | $364.6M | 6.05% | $86.90 |
| Q2 2023 | 4,323,936 | 76,884 | -1.7% | $436.4M | 6.88% | $100.92 |
| Q1 2023 | 4,400,820 | 103,342 | -2.3% | $409.4M | 6.69% | $93.02 |
| Q4 2022 | 4,504,162 | 146,868 | -3.2% | $335.5M | 5.24% | $74.49 |
| Q3 2022 | 4,651,030 | 1,951,017 | -29.6% | $318.9M | 4.74% | $68.56 |
| Q2 2022 | 6,602,047 | 189,597 | -2.8% | $539.7M | 7.03% | $81.75 |
| Q1 2022 | 6,791,644 | 188,988 | -2.7% | $708.1M | 6.97% | $104.26 |
| Q4 2021 | 6,980,632 | 90,160 | -1.3% | $839.8M | 7.17% | $120.31 |
| Q3 2021 | 7,070,792 | +1,221,460 | +20.9% | $789.5M | 7.09% | $111.65 |
| Q2 2021 | 5,849,332 | 71,313 | -1.2% | $702.9M | 6.23% | $120.16 |
| Q1 2021 | 5,920,645 | 769,234 | -11.5% | $700.3M | 6.58% | $118.28 |
| Q4 2020 | 6,689,879 | 58,220 | -0.9% | $729.5M | 7.78% | $109.04 |
| Q3 2020 | 6,748,099 | 79,356 | -1.2% | $547.1M | 6.51% | $81.07 |
| Q2 2020 | 6,827,455 | +3,780,024 | +124.0% | $387.6M | 5.19% | $56.77 |
| Q1 2020 | 3,047,431 | +65,000 | +2.2% | $145.6M | 2.33% | $47.79 |
| Q4 2019 | 2,982,431 | — | — | $173.3M | 2.14% | $58.10 |
Methodology & FAQ
How This Position History Is Sourced
Each row is one SEC Form 13F-HR filing disclosing this position. Share count, market value, and reported quarter are taken verbatim from the filing; portfolio weight is recomputed against the same filing's total reported equity book. Implied price-per-share is market value divided by shares — a quarter-end mark, not the manager's cost basis. See the full methodology document for the normalization rules.
When did Ruane, Cunniff & Goldfarb L.P. first disclose a TSM position in 13F-HR filings?
Ruane, Cunniff & Goldfarb L.P. first reported TAIWAN SEMICONDUCTOR MANUFAC (TSM) on its 13F-HR filing for the period ending 2019-12-31 (Q4 2019). The position has appeared on 26 reported quarters within Pactolio's tracked window.
What was Ruane, Cunniff & Goldfarb L.P.'s most recent quarter-over-quarter share-count change in TSM?
Between Q4 2025 and Q1 2026, Ruane, Cunniff & Goldfarb L.P. reduced its TSM position by 213,302 shares (-15.0%), leaving 1,208,419 shares at a market value of $408.4M.
Does the implied price-per-share represent Ruane, Cunniff & Goldfarb L.P.'s cost basis in TSM?
No. The implied price-per-share column is the 13F-HR reported market value divided by reported share count on the filing date (end of quarter). It is a quarter-end mark, not a cost basis or transaction price. Use it as a sanity check on the value column, not as an indicator of the manager's entry or exit price.