BorgWarner Inc.
MX ˙ BMV ˙ US0997241064
SecurityMX:BWA / BorgWarner Inc.
InstitutionBoothbay Fund Management, Llc
Latest Disclosed Ownership80,000 shares
Latest Disclosed Value $ 4,340,800
Boothbay Fund Management, Llc ownership in BWA / BorgWarner Inc.

On May 15, 2026 - Boothbay Fund Management, Llc filed a 13F-HR form disclosing ownership of 80,000 shares of BorgWarner Inc. (MX:BWA) valued at $4,340,800 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 19,234 shares of BorgWarner Inc.. This represents a change in shares of 315.93% during the quarter.

Boothbay Fund Management, Llc has a history of taking positions in derivatives of the underlying security (BWA) in the form of stock options. The firm currently holds call options representing 0 of underlying shares valued at $0 USD and put options representing 80,000 of underlying shares valued at $4,340,800 USD .

Note: prior versions of this page mistakenly stated that the share values represented the number of options, not the number of underlying shares. For more information on the data backing these reports, please see the SEC document Frequently Asked Questions About Form 13F.

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

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Institutional Put/Call Ratios
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In addition to reporting standard equity and debt issues, institutions with more than 100MM assets under management must also disclose their put and call option holdings. Since put options generally indicate negative sentiment, and call options indicate positive sentiment, we can get a sense of the overall institutional sentiment by plotting the ratio of puts to calls. The chart to the right plots the historical put/call ratio for this instrument.

Using Put/Call Ratio as an indicator of investor sentiment overcomes one of the key deficiencies of using total institutional ownership, which is that a significant amount of assets under management are invested passively to track indices. Passively-managed funds do not typically buy options, so the put/call ratio indicator more closely tracks the sentiment of actively-managed funds.

MX:BWA / BorgWarner Inc. Historical Put/Call Ratio
Disclosed Equity Positions (from 13F/NPORT Filings)
File
Date
Effective
Date
Form Security Class ID Avg Price
Paid (Est)
Reported
Shares
ΔShares ΔShares
(%)
Reported
Value
(x1000)
ΔValue
(%)
Alloc
(%)
ΔAlloc ΔAlloc (%) Cost Basis
(x1000)
Unrealized
Gain/Loss
(x1000)
2026-05-15 2026-03-31 13F BORGWARNER COM 099724106 80,000 60,766 315.93 4,341 401.15 0.0563
2026-02-17 2025-12-31 13F BORGWARNER COM 099724106 19,234 -12,473 -39.34 867 -37.83 0.0129
2025-11-14 2025-09-30 13F BORGWARNER COM 099724106 31,707 -6,613 -17.26 1,394 8.66 0.0203
2025-08-14 2025-06-30 13F BORGWARNER COM 099724106 38,320 6,754 21.40 1,283 41.81 0.0249
2025-05-15 2025-03-31 13F BORGWARNER COM 099724106 31,566 31,566 904 0.0238
2025-02-14 2024-12-31 13F BORGWARNER COM 099724106 0 -50,861 -100.00 0 -100.00
2024-11-14 2024-09-30 13F BORGWARNER COM 099724106 50,861 15,803 45.08 1,846 63.27 0.0420
2024-08-14 2024-06-30 13F BORGWARNER COM 099724106 35,058 -57 -0.16 1,130 -7.30 0.0268
2024-05-15 2024-03-31 13F BORGWARNER COM 099724106 35,115 24,961 245.82 1,220 234.89 0.0235
2024-02-14 2023-12-31 13F BORGWARNER COM 099724106 10,154 -2,623 -20.53 364 -29.32 0.0093
2023-11-14 2023-09-30 13F BORGWARNER COM 099724106 12,777 12,777 516 0.0123
2023-08-14 2023-06-30 13F BORGWARNER COM 099724106 0 -11,777 -100.00 0 -100.00
2023-05-15 2023-03-31 13F BORGWARNER COM 099724106 11,777 -1,794 -13.22 578 5.86 0.0119
2023-02-14 2022-12-31 13F BORGWARNER COM 099724106 13,571 -19,904 -59.46 546 -48.05 0.0126
2022-11-14 2022-09-30 13F BORGWARNER COM 099724106 33,475 33,475 1,051 0.0262
2021-08-17 2021-06-30 13F/A-1 BORGWARNER COM 099724106 0 -5,219 -100.00 0 -100.00
2021-05-17 2021-03-31 13F BORGWARNER COM 099724106 5,219 -937 -15.22 242 1.68 0.0091
2021-02-12 2020-12-31 13F BORGWARNER COM 099724106 6,156 6,156 238 0.0089
2019-02-14 2018-12-31 13F BORGWARNER COM 099724106 0 -5,127 -100.00 0 -100.00
2018-11-14 2018-09-30 13F BORGWARNER COM 099724106 5,127 -404 -7.30 219 -8.37 0.0216
2018-08-14 2018-06-30 13F BORGWARNER COM 099724106 5,531 5,531 239 0.0208
Disclosed Call Options
File
Date
Effective
Date
Form Security Class ID Opt Avg Share
Price
Shares ΔShares
(%)
Value
(x1000)
ΔValue
(%)
Prior Allocation
(%)
Allocation
(%)
ΔAllocation
(%)
Cost Basis
(x1000)
Profit
(x1000)
Return
(%)
2017-11-14 2017-09-30 13F BORGWARNER COM Call 0 -100.00 0 -100.00 n/a n/a n/a
2017-08-14 2017-06-30 13F BORGWARNER COM Call 5,600 -80.28 237 -80.03 n/a n/a n/a
2017-05-15 2017-03-31 13F BORGWARNER COM Call 28,400 53.51 1,187 117.40 n/a n/a n/a
2017-07-18 2016-06-30 13F/A BORGWARNER COM Call 18,500 546 n/a n/a n/a
2017-07-18 2016-03-31 13F/A BORGWARNER COM Call 0 -100.00 0 -100.00 n/a n/a n/a
2017-07-18 2015-12-31 13F/A BORGWARNER COM Call 50,400 2,179 n/a n/a n/a
2016-02-16 2015-12-31 13F BORGWARNER COM Call 18,000 778 n/a n/a n/a
Disclosed Put Options
File
Date
Effective
Date
Form Security Class ID Opt Avg Share Price Shares ΔShares
(%)
Value
(x1000)
ΔValue
(%)
Prior Allocation
(%)
Allocation
(%)
ΔAllocation
(%)
Cost Basis
(x1000)
Profit
(x1000)
Return
(%)
2026-05-15 2026-03-31 13F BORGWARNER COM Put 80,000 4,341 n/a n/a n/a
Legend
Shares
The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value
The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price
The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class
This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred
Allocation (%)
The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation
The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%)
The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis
The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss
This is the market value of the position as of the effective date minus the cost basis.