보스턴 프로퍼티, Inc.
MX ˙ BMV ˙ US1011211018
SecurityMX:BXP / Boston Properties, Inc.
InstitutionCapital Fund Management S.a.
Latest Disclosed Ownership0 shares
Latest Disclosed Value $ 0
Capital Fund Management S.a. ownership in BXP / Boston Properties, Inc.

On November 13, 2025 - Capital Fund Management S.a. filed a 13F-HR form disclosing ownership of 0 shares of Boston Properties, Inc. (MX:BXP) valued at $0 USD as of September 30, 2025. The entity filed a previous 13F-HR on August 13, 2025 disclosing 110,303 shares of Boston Properties, Inc.. This represents a change in shares of -100.00% during the quarter.

Capital Fund Management S.a. has a history of taking positions in derivatives of the underlying security (BXP) 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 13,100 of underlying shares valued at $679,890 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:BXP / Boston Properties, 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)
2025-11-13 2025-09-30 13F BXP COM 101121101 0 -110,303 -100.00 0 -100.00
2025-08-13 2025-06-30 13F BXP COM 101121101 110,303 110,303 7,442 0.0205
2025-05-14 2025-03-31 13F BXP COM 101121101 0 -78,150 -100.00 0 -100.00
2025-02-13 2024-12-31 13F BXP COM 101121101 78,150 51,841 197.05 5,811 174.62 0.0148
2024-11-13 2024-09-30 13F BXP COM 101121101 26,309 -179,778 -87.23 2,117 -83.32 0.0058
2024-08-13 2024-06-30 13F BOSTON PROPERTIES COM 101121101 206,087 4,334 2.15 12,687 -3.72 0.0373
2024-05-15 2024-03-31 13F BOSTON PROPERTIES COM 101121101 201,753 56,175 38.59 13,176 28.99 0.0381
2024-02-14 2023-12-31 13F BOSTON PROPERTIES COM 101121101 145,578 102,226 235.80 10,215 296.24 0.0274
2023-11-14 2023-09-30 13F BOSTON PROPERTIES COM 101121101 43,352 43,352 2,579 0.0089
2022-11-14 2022-09-30 13F BOSTON PROPERTIES COM 101121101 0 -21,775 -100.00 0 -100.00
2022-08-12 2022-06-30 13F BOSTON PROPERTIES COM 101121101 21,775 8,851 68.48 1,938 16.41 0.0176
2022-05-12 2022-03-31 13F BOSTON PROPERTIES COM 101121101 12,924 12,924 1,665 0.0136
2020-02-13 2019-12-31 13F Boston Properties COM 101121101 0 -5,659 -100.00 0 -100.00
2019-11-13 2019-09-30 13F Boston Properties COM 101121101 5,659 -5,708 -50.22 734 -49.93 0.0066
2019-08-12 2019-06-30 13F Boston Properties COM 101121101 11,367 4,652 69.28 1,466 63.07 0.0133
2019-05-13 2019-03-31 13F/A-1 Boston Properties COM 101121101 6,715 -16,965 -71.64 899 -66.27 0.0080
2019-05-13 2019-03-31 13F Boston Properties COM 101121101 23,680 0 2,665
2019-02-13 2018-12-31 13F Boston Properties COM 101121101 23,680 23,680 252.64 2,665 196.44 0.0236
2017-11-13 2017-09-30 13F Boston Properties COM 101121101 0 -25,472 -100.00 0 -100.00
2017-08-10 2017-06-30 13F Boston Properties COM 101121101 25,472 -3,988 -13.54 3,134 -19.66 0.0253
2017-05-03 2017-03-31 13F Boston Properties COM 101121101 29,460 29,460 15.66 3,901 24.47 0.0325
2016-05-02 2016-03-31 13F Boston Properties COM 101121101 0 -78,297 -100.00 0 -100.00
2016-01-28 2015-12-31 13F Boston Properties COM 101121101 78,297 -69,279 -46.94 9,986 -42.85 0.1027
2015-10-27 2015-09-30 13F Boston Properties COM 101121101 147,576 11,805 8.69 17,473 6.32 0.1953
2015-07-28 2015-06-30 13F Boston Properties COM 101121101 135,771 135,771 -8.00 16,434 -5.95 0.2085
2015-01-28 2014-12-31 13F Boston Properties COM 101121101 0 -4,073 -100.00 0 -100.00
2014-10-31 2014-09-30 13F Boston Properties COM 101121101 4,073 4,073 471 0.0053
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
(%)
2025-11-13 2025-09-30 13F BXP COM Call 0 -100.00 0 -100.00 n/a n/a n/a
2025-08-13 2025-06-30 13F BXP COM Call 19,700 1,329 n/a n/a n/a
2024-08-13 2024-06-30 13F BOSTON PROPERTIES COM Call 0 -100.00 0 -100.00 n/a n/a n/a
2024-05-15 2024-03-31 13F BOSTON PROPERTIES COM Call 20,500 -3.30 1,339 -10.02 n/a n/a n/a
2024-02-14 2023-12-31 13F BOSTON PROPERTIES COM Call 21,200 -90.01 1,488 -88.22 n/a n/a n/a
2023-11-14 2023-09-30 13F BOSTON PROPERTIES COM Call 212,200 -38.19 12,622 -36.16 n/a n/a n/a
2023-08-14 2023-06-30 13F BOSTON PROPERTIES COM Call 343,300 113.10 19,771 126.77 n/a n/a n/a
2023-05-15 2023-03-31 13F BOSTON PROPERTIES COM Call 161,100 382.34 8,719 286.26 n/a n/a n/a
2023-02-13 2022-12-31 13F BOSTON PROPERTIES COM Call 33,400 36.33 2,257 22.93 n/a n/a n/a
2022-11-14 2022-09-30 13F BOSTON PROPERTIES COM Call 24,500 1,837 n/a n/a n/a
2022-05-12 2022-03-31 13F BOSTON PROPERTIES COM Call 0 -100.00 0 -100.00 n/a n/a n/a
2022-02-10 2021-12-31 13F BOSTON PROPERTIES COM Call 16,900 1,947 n/a n/a n/a
2021-11-12 2021-09-30 13F BOSTON PROPERTIES COM Call 0 -100.00 0 -100.00 n/a n/a n/a
2021-08-12 2021-06-30 13F BOSTON PROPERTIES COM Call 23,300 2,670 n/a n/a n/a
2020-02-13 2019-12-31 13F Boston Properties COM Call 0 -100.00 0 -100.00 n/a n/a n/a
2019-11-13 2019-09-30 13F Boston Properties COM Call 2,300 -81.60 298 -81.53 n/a n/a n/a
2019-08-12 2019-06-30 13F Boston Properties COM Call 12,500 -70.59 1,613 -71.65 n/a n/a n/a
2019-05-13 2019-03-31 13F/A Boston Properties COM Call 42,500 5,690 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
(%)
2026-05-14 2026-03-31 13F BXP INC COM BXP INC COM Put 13,100 680 n/a n/a n/a
2026-02-17 2025-12-31 13F BXP COM Put 0 -100.00 0 -100.00 n/a n/a n/a
2025-11-13 2025-09-30 13F BXP COM Put 20,400 -31.77 1,517 -24.84 n/a n/a n/a
2025-08-13 2025-06-30 13F BXP COM Put 29,900 149.17 2,017 150.25 n/a n/a n/a
2025-05-14 2025-03-31 13F BXP COM Put 12,000 -17.81 806 -25.71 n/a n/a n/a
2025-02-13 2024-12-31 13F BXP COM Put 14,600 1,086 n/a n/a n/a
2024-11-13 2024-09-30 13F BOSTON PROPERTIES COM Put 0 -100.00 0 -100.00 n/a n/a n/a
2024-08-13 2024-06-30 13F BOSTON PROPERTIES COM Put 14,900 -53.58 917 -56.25 n/a n/a n/a
2024-05-15 2024-03-31 13F BOSTON PROPERTIES COM Put 32,100 -79.21 2,096 -80.65 n/a n/a n/a
2024-02-14 2023-12-31 13F BOSTON PROPERTIES COM Put 154,400 -66.57 10,834 -60.56 n/a n/a n/a
2023-11-14 2023-09-30 13F BOSTON PROPERTIES COM Put 461,900 -35.99 27,474 -33.89 n/a n/a n/a
2023-08-14 2023-06-30 13F BOSTON PROPERTIES COM Put 721,600 192.86 41,557 211.63 n/a n/a n/a
2023-05-15 2023-03-31 13F BOSTON PROPERTIES COM Put 246,400 286.21 13,335 209.32 n/a n/a n/a
2023-02-13 2022-12-31 13F BOSTON PROPERTIES COM Put 63,800 4,312 n/a n/a n/a
2022-05-12 2022-03-31 13F BOSTON PROPERTIES COM Put 0 -100.00 0 -100.00 n/a n/a n/a
2022-02-10 2021-12-31 13F BOSTON PROPERTIES COM Put 22,300 2,569 n/a n/a n/a
2021-11-12 2021-09-30 13F BOSTON PROPERTIES COM Put 0 -100.00 0 -100.00 n/a n/a n/a
2021-08-12 2021-06-30 13F BOSTON PROPERTIES COM Put 13,200 1,513 n/a n/a n/a
2021-05-14 2021-03-31 13F BOSTON PROPERTIES COM Put 0 -100.00 0 -100.00 n/a n/a n/a
2021-02-12 2020-12-31 13F BOSTON PROPERTIES COM Put 13,000 1,229 n/a n/a n/a
2020-05-13 2020-03-31 13F Boston Properties COM Put 0 -100.00 0 -100.00 n/a n/a n/a
2020-02-13 2019-12-31 13F Boston Properties COM Put 1,500 -55.88 207 -53.06 n/a n/a n/a
2019-11-13 2019-09-30 13F Boston Properties COM Put 3,400 -61.80 441 -61.59 n/a n/a n/a
2019-08-12 2019-06-30 13F Boston Properties COM Put 8,900 -51.10 1,148 -52.89 n/a n/a n/a
2019-05-13 2019-03-31 13F/A Boston Properties COM Put 18,200 766.67 2,437 1,054.98 n/a n/a n/a
2014-01-31 2013-12-31 13F Boston Properties COM Put 2,100 -8.70 211 -14.23 n/a n/a n/a
2013-10-31 2013-09-30 13F Boston Properties COM Put 2,300 246 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.