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SD

Stefan Demmerle

BWA
VICE PRESIDENT · BORGWARNER INC · CIK 0001559086
FILING MIX · LIFETIME31%/69%
BUYS
17
SELLS
37
TOTAL VALUE
$15.16M
COMPANIES
1
ACTIVE SINCE
Feb 2020
HOLDINGS NOW
203,746
AVG SELL PX
$43.97
TRADE KIND
SHOWING 54 / 54
Trades · vs SPY
Loading price series…
Performance · forward returns vs SPY
22 backtested trades · 8 horizons · 29 pending
Forward-return performance of every backtestable P/S trade by Stefan Demmerle, measured at 8 horizons from 7 days to 2 years. Deduped per economic event so co-filings count once. Excess return = trade return minus SPY return over the same window.
HORIZONTRADESWIN RATEINSIDER RETURNSPY RETURNMEAN EXCESSMEDIAN EXCESST-STAT
7d22+45.45%+0.68%-0.25%+0.92%-0.12%—
14d22+36.36%+0.99%+0.07%+0.81%-0.45%—
30d22+45.45%+2.90%+1.29%+1.61%+0.99%—
60d22(2 pending)+40.00%+3.41%+2.90%+0.51%+0.68%—
90d22(2 pending)+45.00%+5.04%+3.89%+1.15%+0.74%—
180d22(3 pending)+47.37%+8.36%+6.64%+1.72%-3.06%—
1y22(10 pending)+75.00%-8.07%+11.74%-19.82%-22.96%—
2y22(12 pending)+60.00%+1.37%+22.86%-21.50%-13.45%—
How to read this: Insider Returnis the average raw return of the filer's trades over the horizon. SPY Return is what SPY did over those same windows — reference only, not a comparison. The headline alpha number is Mean Excess = Insider − SPY; green means the filer beat SPY, red means they trailed it. Win rate is the share of individual trades where the filer beat SPY. T-statvalues above 2 mean the alpha is unlikely to be chance given the sample size. "Pending" counts trades where the horizon hasn't elapsed yet; their stats are not included in the row average.
Holdings over time
BWA · 203,746 shares · as of May 13, 2026
069,510139,021208,531278,042202120222023202420252026SHARES HELD
Trading cadence · quarterly flow
BUY ● SELL ●
2020
2020
2020
2020
2021
2021
2021
2021
2022
2022
2022
2022
2023
2023
2023
2023
2024
2024
2024
2024
2025
2025
2025
2025
2026
2026
FLOW · 17 buys / 37 sellsCOVERAGE · 26 quarters
Form 4 filings · all activity
COMPANYTYPESHARESPRICEVALUEHELD AFTERTRADE DATEFILEDDETAILS
BWA
BORGWARNER INC
SALE
Vice President
5,000$65.00$325.0K203,746May 13, 2026May 14, 2026 ↗View →
BWA
BORGWARNER INC
SALE
Vice President
5,000$62.00$310.0K208,746May 11, 2026May 12, 2026 ↗View →
BWA
BORGWARNER INC
SALE
Vice President
20,000$59.26$1.19M213,746May 8, 2026May 12, 2026 ↗View →
BWA
BORGWARNER INC
SALE
Vice President
2,500$53.03$132.6K233,746Mar 10, 2026Mar 11, 2026 ↗View →
BWA
BORGWARNER INC
SALE
Vice President
12,972$57.57$746.8K236,246Feb 28, 2026Mar 3, 2026 ↗View →
BWA
BORGWARNER INC
PURCHASEGRANT
Stock grant
953——249,218Feb 28, 2026Mar 3, 2026 ↗View →
BWA
BORGWARNER INC
PURCHASEGRANT
Stock grant
55,689——272,666Feb 4, 2026Feb 6, 2026 ↗View →
BWA
BORGWARNER INC
SALE
Vice President
24,401$48.57$1.19M248,265Feb 4, 2026Feb 6, 2026 ↗View →
BWA
BORGWARNER INC
PURCHASEGRANT
Stock grant
22,610——223,953.69Feb 3, 2026Feb 5, 2026 ↗View →
BWA
BORGWARNER INC
SALE
Vice President
5,000$46.00$230.0K204,039.69Nov 12, 2025Nov 13, 2025 ↗View →
BWA
BORGWARNER INC
SALE
Vice President
15,000$45.52$682.8K209,039.69Nov 11, 2025Nov 13, 2025 ↗View →
BWA
BORGWARNER INC
SALE
Vice President
5,000$44.00$220.0K224,039.69Sep 5, 2025Sep 8, 2025 ↗View →
BWA
BORGWARNER INC
SALE
Vice President
5,000$40.50$202.5K229,039.69Aug 13, 2025Aug 14, 2025 ↗View →
BWA
BORGWARNER INC
SALE
Vice President
5,000$40.04$200.2K244,039.69Aug 12, 2025Aug 14, 2025 ↗View →
BWA
BORGWARNER INC
SALE
Vice President
10,000$38.95$389.5K234,039.69Aug 12, 2025Aug 14, 2025 ↗View →
BWA
BORGWARNER INC
SALE
Vice President
20,000$38.17$763.4K249,039.69Aug 4, 2025Aug 6, 2025 ↗View →
BWA
BORGWARNER INC
SALE
Vice President
5,319$29.61$157.5K272,722.69Feb 28, 2025Mar 4, 2025 ↗View →
BWA
BORGWARNER INC
SALE
Vice President
5,758$29.61$170.5K266,964.69Feb 28, 2025Mar 4, 2025 ↗View →
BWA
BORGWARNER INC
PURCHASEGRANT
Stock grant
38,163$31.33$1.20M278,041.69Feb 5, 2025Feb 7, 2025 ↗View →
BWA
BORGWARNER INC
PURCHASEGRANT
Stock grant
32,910——239,878.69Feb 4, 2025Feb 6, 2025 ↗View →
BWA
BORGWARNER INC
PURCHASEGRANT
Stock grant
30,214——238,771.69Feb 4, 2025Feb 5, 2026 ↗View →
BWA
BORGWARNER INC
SALE
Vice President
20,544$34.28$704.1K206,968.69Nov 27, 2024Nov 29, 2024 ↗View →
BWA
BORGWARNER INC
SALE
Vice President
21,500$34.79$748.1K227,512.69Nov 14, 2024Nov 18, 2024 ↗View →
BWA
BORGWARNER INC
SALE
Vice President
3,000$33.00$99.0K249,012.69Mar 13, 2024Mar 14, 2024 ↗View →
BWA
BORGWARNER INC
SALE
Vice President
3,000$31.29$93.9K252,012.69Mar 5, 2024Mar 6, 2024 ↗View →
BWA
BORGWARNER INC
SALE
Vice President
5,319$30.78$163.7K260,539.69Feb 28, 2024Mar 1, 2024 ↗View →
BWA
BORGWARNER INC
SALE
Vice President
5,527$30.78$170.1K255,012.69Feb 28, 2024Mar 1, 2024 ↗View →
BWA
BORGWARNER INC
PURCHASEGRANT
Stock grant
48,192$33.83$1.63M265,858.69Feb 7, 2024Feb 8, 2024 ↗View →
BWA
BORGWARNER INC
PURCHASEGRANT
Stock grant
31,180——217,666.69Feb 6, 2024Feb 8, 2024 ↗View →
BWA
BORGWARNER INC
SALE
Vice President
5,000$47.61$238.1K177,613.52Jun 14, 2023Jun 15, 2023 ↗View →
BWA
BORGWARNER INC
PURCHASEGRANT
Stock grant
23,370——182,613.52Apr 26, 2023Apr 28, 2023 ↗View →
BWA
BORGWARNER INC
SALE
Vice President
3,000$51.05$153.2K159,243.52Mar 3, 2023Mar 6, 2023 ↗View →
BWA
BORGWARNER INC
SALE
Vice President
4,891$50.28$245.9K162,243.52Feb 28, 2023Mar 2, 2023 ↗View →
BWA
BORGWARNER INC
SALE
Vice President
3,125$50.28$157.1K167,134.52Feb 28, 2023Mar 2, 2023 ↗View →
BWA
BORGWARNER INC
SALE
Vice President
4,000$50.00$200.0K170,259.52Feb 14, 2023Feb 15, 2023 ↗View →
BWA
BORGWARNER INC
PURCHASEGRANT
Stock grant
22,461$46.63$1.05M174,259.52Feb 8, 2023Feb 10, 2022 ↗View →
BWA
BORGWARNER INC
SALE
Vice President
3,125$41.01$128.2K150,340.15Feb 28, 2022Mar 2, 2022 ↗View →
BWA
BORGWARNER INC
SALE
Vice President
2,641$41.01$108.3K153,465.15Feb 28, 2022Mar 2, 2022 ↗View →
BWA
BORGWARNER INC
PURCHASEGRANT
Stock grant
1,218——156,106.15Feb 23, 2022Feb 23, 2022 ↗View →
BWA
BORGWARNER INC
PURCHASEGRANT
Stock grant
21,590——154,888.15Feb 17, 2022Feb 18, 2022 ↗View →
BWA
BORGWARNER INC
PURCHASEGRANT
Stock grant
13,231——133,298.15Feb 8, 2022Feb 10, 2022 ↗View →
BWA
BORGWARNER INC
SALE
Vice President
3,000$49.00$147.0K118,977.04Nov 16, 2021Nov 22, 2021 ↗View →
BWA
BORGWARNER INC
SALE
Vice President
6,000$46.95$281.7K121,977.04Nov 5, 2021Nov 8, 2021 ↗View →
BWA
BORGWARNER INC
SALE
Vice President
4,500$55.22$248.5K127,977.04Jun 2, 2021Jun 3, 2021 ↗View →
BWA
BORGWARNER INC
PURCHASEGRANT
Stock grant
22,432——132,477.04Mar 29, 2021Mar 31, 2021 ↗View →
BWA
BORGWARNER INC
SALE
Vice President
2,000$48.79$97.6K110,045.04Mar 5, 2021Mar 8, 2021 ↗View →
BWA
BORGWARNER INC
SALE
Vice President
2,641$45.00$118.8K112,045.04Feb 28, 2021Mar 2, 2021 ↗View →
BWA
BORGWARNER INC
SALE
Vice President
1,504$44.71$67.2K114,686.04Feb 28, 2021Mar 2, 2021 ↗View →
BWA
BORGWARNER INC
PURCHASEGRANT
Stock grant
6,427——116,190.04Feb 6, 2021Feb 9, 2021 ↗View →
BWA
BORGWARNER INC
SALE
Vice President
3,125$36.85$115.2K108,809.96Dec 14, 2020Dec 14, 2020 ↗View →
BWA
BORGWARNER INC
SALE
Vice President
1,837$30.55$56.1K111,934.96Feb 28, 2020Mar 3, 2020 ↗View →
BWA
BORGWARNER INC
SALE
Vice President
1,504$30.55$45.9K113,771.96Feb 28, 2020Mar 3, 2020 ↗View →
BWA
BORGWARNER INC
PURCHASEGRANT
Stock grant
14,332——115,275.96Feb 12, 2020Feb 13, 2020 ↗View →
BWA
BORGWARNER INC
PURCHASEGRANT
Stock grant
15,727——100,943.96Feb 11, 2020Feb 13, 2020 ↗View →
Other insiders · BWA
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About this filer
CIK 0001559086
ROLE
Vice President
PRIMARY
BWA
COMPANIES
1
ACTIVE SINCE
Feb 2020
MARKETPEEL · /INSIDER/0001559086DATA · SEC EDGAR · FORM 4 · CONSOLIDATED TAPE
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