The Boeing Company
DE ˙ XTRA ˙ US0970231058
184,44 € ↓ -2,14 (-1,15%)
2026-06-03
DEL PRIS
SecurityDE:BCO / The Boeing Company
InstitutionSippican Capital Advisors
Latest Disclosed Ownership2,939 shares
Latest Disclosed Value $ 584,949
Sippican Capital Advisors reports 7.35% decrease in ownership of BCO / The Boeing Company

On April 23, 2026 - Sippican Capital Advisors filed a 13F-HR form disclosing ownership of 2,939 shares of The Boeing Company (DE:BCO) valued at $508,565 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 23, 2026 disclosing 3,172 shares of The Boeing Company. This represents a change in shares of -7.35% during the quarter. The current value of the position is $542,069 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)
2026-04-23 2026-03-31 13F Boeing COM 097023105 2,939 -233 -7.35 585 -15.12 0.4003
2026-01-23 2025-12-31 13F Boeing COM 097023105 3,172 -278 -8.06 689 -7.53 0.4425
2025-10-27 2025-09-30 13F Boeing COM 097023105 3,450 0 0.00 745 3.05 0.4922
2025-07-25 2025-06-30 13F Boeing COM 097023105 3,450 134 4.04 723 27.79 0.5251
2025-04-28 2025-03-31 13F Boeing COM 097023105 3,316 363 12.29 566 8.24 0.4263
2025-01-23 2024-12-31 13F Boeing COM 097023105 2,953 -4,604 -60.92 523 -54.53 0.3808
2024-10-28 2024-09-30 13F Boeing COM 097023105 7,557 1,131 17.60 1,149 -1.80 0.8016
2024-08-06 2024-06-30 13F Boeing COM 097023105 6,426 601 10.32 1,170 4.00 0.9257
2024-05-02 2024-03-31 13F Boeing COM 097023105 5,825 436 8.09 1,124 -19.94 0.8743
2024-01-30 2023-12-31 13F Boeing COM 097023105 5,389 54 1.01 1,405 37.38 1.1019
2023-10-24 2023-09-30 13F Boeing COM 097023105 5,335 -517 -8.83 1,023 -17.25 0.9234
2023-08-15 2023-06-30 13F Boeing COM 097023105 5,852 -943 -13.88 1,236 -14.41 1.1395
2023-07-14 2023-03-31 13F Boeing cs 097023105 6,795 -100 -1.45 1,443 9.90 1.3800
2023-01-26 2022-12-31 13F Boeing cs 097023105 6,895 -62 -0.89 1,313 55.94 1.2560
2022-10-17 2022-09-30 13F Boeing cs 097023105 6,957 53 0.77 842 -10.81 0.8783
2022-07-19 2022-06-30 13F Boeing cs 097023105 6,904 1,740 33.69 944 -4.55 0.9368
2022-04-20 2022-03-31 13F Boeing cs 097023105 5,164 642 14.20 989 8.68 0.8210
2022-01-19 2021-12-31 13F Boeing cs 097023105 4,522 457 11.24 910 1.79 0.7732
2021-10-20 2021-09-30 13F Boeing cs 097023105 4,065 649 19.00 894 9.29 0.7746
2021-07-22 2021-06-30 13F Boeing cs 097023105 3,416 956 38.86 818 30.46 0.7116
2021-04-15 2021-03-31 13F Boeing CS 097023105 2,460 208 9.24 627 30.08 0.5792
2021-01-21 2020-12-31 13F Boeing cs 097023105 2,252 159 7.60 482 39.31 0.5229
2020-10-23 2020-09-30 13F Boeing cs 097023105 2,093 -75 -3.46 346 -12.85 0.4302
2020-07-15 2020-06-30 13F BOEING CO COM Stock 097023105 2,168 124 6.07 397 30.16 0.5351
2020-04-16 2020-03-31 13F BOEING CO COM Stock 097023105 2,044 779 61.58 305 -25.97 0.4968
2020-01-21 2019-12-31 13F BOEING CO COM Stock 097023105 1,265 6 0.48 412 -13.99 0.4584
2019-10-17 2019-09-30 13F BOEING CO COM Stock 097023105 1,259 0 0.00 479 4.59 0.5793
2019-07-17 2019-06-30 13F BOEING CO COM Stock 097023105 1,259 18 1.45 458 -3.17 0.5398
2019-04-17 2019-03-31 13F BOEING CO COM Stock 097023105 1,241 -209 -14.41 473 1.07 0.5622
2019-01-16 2018-12-31 13F BOEING CO COM Stock 097023105 1,450 -5 -0.34 468 -13.17 0.6323
2018-11-13 2018-09-30 13F BOEING CO COM Stock 097023105 1,455 41 2.90 539 13.71 0.6235
2018-07-17 2018-06-30 13F Boeing cs 097023105 1,414 -110 -7.22 474 -5.20 0.4738
2018-04-24 2018-03-31 13F Boeing cs 097023105 1,524 -120 -7.30 500 3.09 0.5187
2018-01-17 2017-12-31 13F Boeing cs 097023105 1,644 -38 -2.26 485 13.32 0.4732
2017-10-30 2017-09-30 13F Boeing cs 097023105 1,682 -137 -7.53 428 18.89 0.4384
2017-07-18 2017-06-30 13F Boeing cs 097023105 1,819 -47 -2.52 360 9.09 0.3909
2017-04-24 2017-03-31 13F Boeing cs 097023105 1,866 -376 -16.77 330 -5.44 0.3504
2017-02-09 2016-12-31 13F Boeing cs 097023105 2,242 0 0.00 349 18.31 0.3655
2016-10-19 2016-09-30 13F Boeing cs 097023105 2,242 0 0.00 295 1.37 0.3366
2016-07-26 2016-06-30 13F Boeing cs 097023105 2,242 -30 -1.32 291 1.04 0.3463
2016-05-09 2016-03-31 13F Boeing cs 097023105 2,272 50 2.25 288 -10.28 0.3666
2016-02-09 2015-12-31 13F Boeing cs 097023105 2,222 0 0.00 321 10.31 0.4053
2015-11-04 2015-09-30 13F Boeing cs 097023105 2,222 -320 -12.59 291 -17.56 0.3695
2015-08-11 2015-06-30 13F Boeing cs 097023105 2,542 -3 -0.12 353 -7.59 0.3559
2015-05-14 2015-03-31 13F Boeing cs 097023105 2,545 0 0.00 382 15.41 0.3890
2015-02-17 2014-12-31 13F Boeing cs 097023105 2,545 60 2.41 331 4.42 0.3305
2014-11-14 2014-09-30 13F Boeing COM 097023105 2,485 2,485 317 0.3222
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.