Rush Enterprises, Inc.
US ˙ NasdaqGS ˙ US7818462092

SecurityRUSHA / Rush Enterprises, Inc.
InstitutionSei Investments Co
Latest Disclosed Ownership81,982 shares
Latest Disclosed Value $ 4,422,098
Sei Investments Co ownership in RUSHA / Rush Enterprises, Inc.

On February 13, 2026 - Sei Investments Co filed a 13F-HR form disclosing ownership of 81,982 shares of Rush Enterprises, Inc. (US:RUSHA) valued at $4,422,109 USD as of December 31, 2025. The entity filed a previous 13F-HR on November 13, 2025 disclosing 95,771 shares of Rush Enterprises, Inc.. This represents a change in shares of -14.40% during the quarter. The current value of the position is $5,470,659 USD.

Sei Investments Co has a history of taking positions in derivatives of the underlying security (RUSHA) 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.

RUSHA / Rush Enterprises, 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)
2026-02-13 2025-12-31 13F RUSH ENTERPRISES CL A 781846209 81,982 -13,789 -14.40 4,422 -13.63 0.0044
2025-11-13 2025-09-30 13F RUSH ENTERPRISES CL A 781846209 95,771 1,537 1.63 5,121 5.48 0.0055
2025-08-14 2025-06-30 13F RUSH ENTERPRISES CL A 781846209 94,234 -3,438 -3.52 4,854 -6.94 0.0056
2025-05-14 2025-03-31 13F/A-1 RUSH ENTERPRISES CL A 781846209 97,672 -19,606 -16.72 5,217 -18.82 0.0067
2025-05-13 2025-03-31 13F RUSH ENTERPRISES CL A 781846209 118,030 752 6,462 0.0070
2025-02-11 2024-12-31 13F RUSH ENTERPRISES CL A 781846209 117,278 2,136 1.86 6,426 5.64 0.0083
2024-11-12 2024-09-30 13F RUSH ENTERPRISES CL A 781846209 115,142 -1,928 -1.65 6,083 24.10 0.0079
2024-08-13 2024-06-30 13F RUSH ENTERPRISES CL A 781846209 117,070 18,999 19.37 4,902 -6.61 0.0069
2024-05-07 2024-03-31 13F RUSH ENTERPRISES CL A 781846209 98,071 -16,838 -14.65 5,249 -9.20 0.0077
2024-02-14 2023-12-31 13F RUSH ENTERPRISES CL A 781846209 114,909 -58,404 -33.70 5,780 -18.32 0.0093
2023-11-14 2023-09-30 13F RUSH ENTERPRISES CL A 781846209 173,313 54,079 45.36 7,076 -2.29 0.0127
2023-08-11 2023-06-30 13F RUSH ENTERPRISES CL A 781846209 119,234 -4,838 -3.90 7,242 6.91 0.0126
2023-05-12 2023-03-31 13F RUSH ENTERPRISES CL A 781846209 124,072 814 0.66 6,774 5.14 0.0126
2023-02-10 2022-12-31 13F RUSH ENTERPRISES CL A 781846209 123,258 -6,567 -5.06 6,444 13.15 0.0143
2022-11-14 2022-09-30 13F RUSH ENTERPRISES CL A 781846209 129,825 -9,905 -7.09 5,694 -15.28 0.0127
2022-08-15 2022-06-30 13F RUSH ENTERPRISES CL A 781846209 139,730 29,297 26.53 6,721 19.76 0.0145
2022-05-13 2022-03-31 13F RUSH ENTERPRISES CL A 781846209 110,433 2,097 1.94 5,612 -6.96 0.0113
2022-02-14 2021-12-31 13F RUSH ENTERPRISES CL A 781846209 108,336 59,670 122.61 6,032 174.06 0.0113
2021-11-12 2021-09-30 13F RUSH ENTERPRISES CL A 781846209 48,666 -2,007 -3.96 2,201 0.41 0.0046
2021-08-06 2021-06-30 13F RUSH ENTERPRISES CL A 781846209 50,673 -23,364 -31.56 2,192 -34.11 0.0049
2021-05-12 2021-03-31 13F RUSH ENTERPRISES CL A 781846209 74,037 8,687 13.29 3,327 22.90 0.0084
2021-02-08 2020-12-31 13F RUSH ENTERPRISES CL A 781846209 65,350 31,138 91.01 2,707 56.56 0.0070
2020-12-04 2020-09-30 13F/A-1 RUSH ENTERPRISES CL A 781846209 34,212 23,507 219.59 1,729 289.41 0.0050
2020-11-06 2020-09-30 13F RUSH ENTERPRISES CL A 781846209 34,212 23,507 1,729 4,163.0476
2020-08-17 2020-06-30 13F/A-1 RUSH ENTERPRISES CL A 781846209 10,705 29 0.27 444 30.21 0.0014
2020-08-11 2020-06-30 13F RUSH ENTERPRISES CL A 781846209 10,642 -34 495 1,342.7138
2020-05-14 2020-03-31 13F RUSH ENTERPRISES CL A 781846209 10,676 34 0.32 341 -31.11 0.0013
2020-02-06 2019-12-31 13F RUSH ENTERPRISES CL A 781846209 10,642 -3,000 -21.99 495 -5.89 0.0015
2019-11-12 2019-09-30 13F RUSH ENTERPRISES CL A 781846209 13,642 1,641 13.67 526 20.09 0.0013
2019-08-14 2019-06-30 13F RUSH ENTERPRISES CL A 781846209 12,001 19 0.16 438 -12.57 0.0014
2019-05-15 2019-03-31 13F RUSH ENTERPRISES CL A 781846209 11,982 11,982 501 0.0017
2019-02-13 2018-12-31 13F RUSH ENTERPRISES CL A 781846209 0 -3,935 -100.00 0 -100.00
2018-11-08 2018-09-30 13F RUSH ENTERPRISES CL A 781846209 3,935 -25 -0.63 155 -9.88 0.0006
2018-08-03 2018-06-30 13F RUSH ENTERPRISES CL A 781846209 3,960 14 0.35 172 2.99 0.0006
2018-05-11 2018-03-31 13F RUSH ENTERPRISES CL A 781846209 3,946 11 0.28 167 -16.50 0.0006
2018-02-08 2017-12-31 13F RUSH ENTERPRISES CL A 781846209 3,935 0 0.00 200 9.89 0.0007
2017-11-06 2017-09-30 13F RUSH ENTERPRISES CL A 781846209 3,935 3,935 182 0.0006
2016-05-10 2016-03-31 13F/A-1 RUSH ENTERPRISES CL A 781846209 0 -12,290 -100.00 0 -100.00
2016-02-03 2015-12-31 13F RUSH ENTERPRISES CL A 781846209 12,290 -54,403 -81.57 269 -83.33 0.0016
2015-11-02 2015-09-30 13F/A-1 RUSH ENTERPRISES CL A 781846209 66,693 66,388 21,766.56 1,614 20,075.00 0.0148
2015-10-30 2015-09-30 13F RUSH ENTERPRISES CL A 781846209 66,693 1,614
2015-08-07 2015-06-30 13F/A-1 RUSH ENTERPRISES CL A 781846209 305 -39,127 -99.23 8 -99.26 0.0001
2015-08-04 2015-06-30 13F RUSH ENTERPRISES CL A 781846209 305 -39,127 8 0.0001
2015-05-14 2015-03-31 13F/A-1 RUSH ENTERPRISES CL A 781846209 39,432 922 2.39 1,078 -12.71 0.0094
2015-05-01 2015-03-31 13F RUBICON PROJ PUT 781846209 39,432 39,432 1,078 0.0094
2015-02-10 2014-12-31 13F RUSH ENTERPRISES CL A 781846209 38,510 38,510 1,235 0.0109
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
(%)
2015-05-01 2015-03-31 13F RUBICON PROJ PUT 39,432 1,078 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.