Group 1 Automotive, Inc.
US ˙ NYSE ˙ US3989051095

SecurityGPI / Group 1 Automotive, Inc.
InstitutionShellback Capital, LP
Latest Disclosed Ownership20,000 shares
Latest Disclosed Value $ 6,612,600
Shellback Capital, LP ownership in GPI / Group 1 Automotive, Inc.

On May 15, 2026 - Shellback Capital, LP filed a 13F-HR form disclosing ownership of 20,000 shares of Group 1 Automotive, Inc. (US:GPI) valued at $6,612,600 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 30,000 shares of Group 1 Automotive, Inc.. This represents a change in shares of -33.33% during the quarter. The current value of the position is $6,108,600 USD.

Shellback Capital, LP has a history of taking positions in derivatives of the underlying security (GPI) in the form of stock options.

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.

GPI / Group 1 Automotive, 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 GROUP 1 AUTOMOTIVE COM 398905109 20,000 -10,000 -33.33 6,613 -43.96 0.9411
2026-02-17 2025-12-31 13F GROUP 1 AUTOMOTIVE COM 398905109 30,000 -16,900 -36.03 11,799 -42.50 1.1260
2025-11-14 2025-09-30 13F GROUP 1 AUTOMOTIVE COM 398905109 46,900 -13,100 -21.83 20,519 -21.69 1.3004
2025-08-14 2025-06-30 13F GROUP 1 AUTOMOTIVE COM 398905109 60,000 -24,125 -28.68 26,203 -18.45 1.7443
2025-05-15 2025-03-31 13F GROUP 1 AUTOMOTIVE COM 398905109 84,125 -7,900 -8.58 32,132 -17.16 3.1154
2025-02-14 2024-12-31 13F GROUP 1 AUTOMOTIVE COM 398905109 92,025 12,025 15.03 38,787 26.57 2.6719
2024-11-14 2024-09-30 13F GROUP 1 AUTOMOTIVE COM 398905109 80,000 -15,302 -16.06 30,643 8.16 2.4763
2024-08-14 2024-06-30 13F GROUP 1 AUTOMOTIVE COM 398905109 95,302 20,302 27.07 28,331 29.26 2.0790
2024-05-15 2024-03-31 13F GROUP 1 AUTOMOTIVE COM 398905109 75,000 30,000 66.67 21,917 59.83 1.4737
2024-02-14 2023-12-31 13F GROUP 1 AUTOMOTIVE COM 398905109 45,000 3,000 7.14 13,713 21.52 1.2024
2023-11-14 2023-09-30 13F GROUP 1 AUTOMOTIVE COM 398905109 42,000 -5,000 -10.64 11,286 -6.97 1.0914
2023-08-14 2023-06-30 13F GROUP 1 AUTOMOTIVE COM 398905109 47,000 -7,000 -12.96 12,131 -0.79 1.0715
2023-05-15 2023-03-31 13F GROUP 1 AUTOMOTIVE COM 398905109 54,000 -40,700 -42.98 12,227 -28.42 1.3790
2023-02-13 2022-12-31 13F GROUP 1 AUTOMOTIVE COM 398905109 94,700 -50,300 -34.69 17,081 -17.55 3.0624
2022-11-14 2022-09-30 13F GROUP 1 AUTOMOTIVE COM 398905109 145,000 15,000 11.54 20,716 -6.15 2.9954
2022-08-15 2022-06-30 13F GROUP 1 AUTOMOTIVE COM 398905109 130,000 -10,338 -7.37 22,074 -6.28 3.8374
2022-05-16 2022-03-31 13F GROUP 1 AUTOMOTIVE COM 398905109 140,338 -25,973 -15.62 23,553 -27.46 3.1192
2022-02-14 2021-12-31 13F GROUP 1 AUTOMOTIVE COM 398905109 166,311 0 0.00 32,467 3.90 1.8809
2021-11-15 2021-09-30 13F GROUP 1 AUTOMOTIVE COM 398905109 166,311 -5,400 -3.14 31,247 17.84 1.8233
2021-08-16 2021-06-30 13F GROUP 1 AUTOMOTIVE COM 398905109 171,711 131,511 327.14 26,517 318.05 1.4341
2021-05-27 2021-03-31 13F/A-1 GROUP 1 AUTOMOTIVE COM 398905109 40,200 -38,752 -49.08 6,343 -38.74 0.3769
2021-02-16 2020-12-31 13F GROUP 1 AUTOMOTIVE COM 398905109 78,952 -96,048 -54.88 10,354 -33.06 0.8284
2020-11-16 2020-09-30 13F GROUP 1 AUTOMOTIVE COM 398905109 175,000 129,900 288.03 15,468 419.93 1.1976
2020-08-14 2020-06-30 13F GROUP 1 AUTOMOTIVE COM 398905109 45,100 45,100 2,975 0.3101
2019-11-14 2019-09-30 13F GROUP 1 AUTOMOTIVE COM 398905109 0 -56,867 -100.00 0 -100.00
2019-08-14 2019-06-30 13F GROUP 1 AUTOMOTIVE COM 398905109 56,867 0 0.00 4,657 26.58 0.5802
2019-05-15 2019-03-31 13F GROUP 1 AUTOMOTIVE COM 398905109 56,867 56,867 3,679 0.4373
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
(%)
2021-08-16 2021-06-30 13F GROUP 1 AUTOMOTIVE COM Put 0 -100.00 0 -100.00 n/a n/a n/a
2021-05-14 2021-03-31 13F GROUP 1 AUTOMOTIVE COM Put 40,200 6,343 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.