Golub Capital BDC, Inc.
US ˙ NasdaqGS ˙ US38173M1027

SecurityGBDC / Golub Capital BDC, Inc.
InstitutionD. E. Shaw & Co., Inc.
ManagerDE Shaw
Latest Disclosed Ownership953,212 shares
Latest Disclosed Value $ 12,067,664
D. E. Shaw & Co., Inc. reports 231.74% increase in ownership of GBDC / Golub Capital BDC, Inc.

On May 15, 2026 - D. E. Shaw & Co., Inc. filed a 13F-HR form disclosing ownership of 953,212 shares of Golub Capital BDC, Inc. (US:GBDC) valued at $12,067,664 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 287,334 shares of Golub Capital BDC, Inc.. This represents a change in shares of 231.74% during the quarter. The current value of the position is $12,296,435 USD.

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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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 GOLUB CAP BDC COM 38173M102 953,212 665,878 231.74 12,068 209.49 0.0073
2026-02-17 2025-12-31 13F GOLUB CAP BDC COM 38173M102 287,334 287,334 3,899 0.0021
2025-11-14 2025-09-30 13F GOLUB CAP BDC COM 38173M102 0 -15,264 -100.00 0 -100.00
2025-08-14 2025-06-30 13F GOLUB CAP BDC COM 38173M102 15,264 -46,031 -75.10 224 -75.97 0.0002
2025-05-15 2025-03-31 13F GOLUB CAP BDC COM 38173M102 61,295 -83,454 -57.65 928 -57.70 0.0008
2025-02-14 2024-12-31 13F GOLUB CAP BDC COM 38173M102 144,749 49,863 52.55 2,194 53.11 0.0016
2024-11-14 2024-09-30 13F GOLUB CAP BDC COM 38173M102 94,886 -95,849 -50.25 1,434 -52.17 0.0012
2024-08-14 2024-06-30 13F GOLUB CAP BDC COM 38173M102 190,735 190,735 2,996 0.0028
2024-05-15 2024-03-31 13F GOLUB CAP BDC COM 38173M102 0 -79,334 -100.00 0 -100.00
2024-02-14 2023-12-31 13F GOLUB CAP BDC COM 38173M102 79,334 68,734 648.43 1,198 672.26 0.0010
2023-11-14 2023-09-30 13F GOLUB CAP BDC COM 38173M102 10,600 10,600 156 0.0002
2023-05-15 2023-03-31 13F GOLUB CAP BDC COM 38173M102 0 -185,885 -100.00 0 -100.00
2023-02-14 2022-12-31 13F GOLUB CAP BDC COM 38173M102 185,885 173,218 1,367.47 2,446 1,457.96 0.0027
2022-11-14 2022-09-30 13F GOLUB CAP BDC COM 38173M102 12,667 -56,605 -81.71 157 -82.52 0.0002
2022-08-15 2022-06-30 13F GOLUB CAP BDC COM 38173M102 69,272 -250,119 -78.31 898 -81.52 0.0011
2022-05-16 2022-03-31 13F GOLUB CAP BDC COM 38173M102 319,391 -28,844 -8.28 4,858 -9.65 0.0045
2022-02-14 2021-12-31 13F GOLUB CAP BDC COM 38173M102 348,235 230,188 195.00 5,377 188.16 0.0045
2021-11-15 2021-09-30 13F GOLUB CAP BDC COM 38173M102 118,047 -243,946 -67.39 1,866 -66.57 0.0017
2021-08-16 2021-06-30 13F GOLUB CAP BDC COM 38173M102 361,993 309,438 588.79 5,582 626.82 0.0048
2021-05-17 2021-03-31 13F GOLUB CAP BDC COM 38173M102 52,555 22,885 77.13 768 83.29 0.0007
2021-02-16 2020-12-31 13F GOLUB CAP BDC COM 38173M102 29,670 -68,687 -69.83 419 -67.82 0.0004
2020-11-16 2020-09-30 13F GOLUB CAP BDC COM 38173M102 98,357 -51,938 -34.56 1,302 -25.64 0.0013
2020-08-14 2020-06-30 13F GOLUB CAP BDC COM 38173M102 150,295 -580,117 -79.42 1,751 -80.91 0.0021
2020-05-15 2020-03-31 13F GOLUB CAP BDC COM 38173M102 730,412 -278,471 -27.60 9,174 -50.73 0.0143
2020-02-14 2019-12-31 13F GOLUB CAP BDC COM 38173M102 1,008,883 600,694 147.16 18,619 142.12 0.0213
2019-11-14 2019-09-30 13F GOLUB CAP BDC COM 38173M102 408,189 -14,722 -3.48 7,690 2.15 0.0095
2019-08-14 2019-06-30 13F GOLUB CAP BDC COM 38173M102 422,911 114,554 37.15 7,528 36.53 0.0094
2019-05-15 2019-03-31 13F GOLUB CAP BDC COM 38173M102 308,357 119,402 63.19 5,514 76.96 0.0071
2019-02-14 2018-12-31 13F GOLUB CAP BDC COM 38173M102 188,955 -38,823 -17.04 3,116 -27.04 0.0043
2018-11-14 2018-09-30 13F GOLUB CAP BDC COM 38173M102 227,778 68,795 43.27 4,271 46.82 0.0051
2018-08-14 2018-06-30 13F GOLUB CAP BDC COM 38173M102 158,983 94,081 144.96 2,909 150.56 0.0038
2018-05-15 2018-03-31 13F GOLUB CAP BDC COM 38173M102 64,902 -24,949 -27.77 1,161 -29.03 0.0016
2018-02-14 2017-12-31 13F GOLUB CAP BDC COM 38173M102 89,851 39,519 78.52 1,636 72.76 0.0023
2017-11-14 2017-09-30 13F GOLUB CAP BDC COM 38173M102 50,332 50,332 947 0.0015
2017-05-15 2017-03-31 13F GOLUB CAP BDC COM 38173M102 0 -59,899 -100.00 0 -100.00
2017-02-14 2016-12-31 13F GOLUB CAP BDC COM 38173M102 59,899 48,811 440.21 1,102 434.95 0.0019
2016-11-14 2016-09-30 13F GOLUB CAP BDC COM 38173M102 11,088 -10,211 -47.94 206 -46.49 0.0004
2016-08-15 2016-06-30 13F GOLUB CAP BDC COM 38173M102 21,299 -31,459 -59.63 385 -57.83 0.0007
2016-05-16 2016-03-31 13F GOLUB CAP BDC COM 38173M102 52,758 38,997 283.39 913 298.69 0.0016
2016-02-16 2015-12-31 13F GOLUB CAP BDC COM 38173M102 13,761 -27,900 -66.97 229 -65.62 0.0003
2015-11-16 2015-09-30 13F GOLUB CAP BDC COM 38173M102 41,661 9,623 30.04 666 16.43 0.0010
2014-05-15 2014-03-31 13F GOLUB CAP BDC COM 38173M102 32,038 32,038 572 0.0008
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.