Boston Properties, Inc.
US ˙ NYSE ˙ US1011211018

SecurityBXP / Boston Properties, Inc.
InstitutionParallel Advisors, LLC
Latest Disclosed Ownership0 shares
Latest Disclosed Value $ 0
Parallel Advisors, LLC ownership in BXP / Boston Properties, Inc.

On June 2, 2026 - Parallel Advisors, LLC filed a 13F-HR/A form disclosing ownership of 0 shares of Boston Properties, Inc. (US:BXP) valued at $0 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 11, 2026 disclosing 3,124 shares of Boston Properties, Inc.. This represents a change in shares of -100.00% during the quarter. The current value of the position is $0 USD.

Parallel Advisors, LLC 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 .

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.

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)
2026-06-02 2026-03-31 13F/A-1 BOSTON PPTYS REIT 101121101 0 -3,124 -100.00 0 -100.00
2026-02-11 2025-12-31 13F BOSTON PPTYS REIT 101121101 3,124 -240 -7.13 211 -16.00 0.0039
2025-11-13 2025-09-30 13F BOSTON PPTYS REIT 101121101 3,364 -362 -9.72 250 -0.40 0.0046
2025-07-08 2025-06-30 13F BOSTON PPTYS REIT 101121101 3,726 1,312 54.35 251 54.94 0.0050
2025-04-08 2025-03-31 13F BOSTON PPTYS REIT 101121101 2,414 35 1.47 162 -7.95 0.0037
2025-02-10 2024-12-31 13F BOSTON PPTYS REIT 101121101 2,379 3 0.13 177 -7.85 0.0040
2024-11-13 2024-09-30 13F BOSTON PPTYS REIT 101121101 2,376 417 21.29 191 59.17 0.0045
2024-08-08 2024-06-30 13F BOSTON PPTYS REIT 101121101 1,959 -25 -1.26 121 -6.98 0.0031
2024-05-06 2024-03-31 13F BOSTON PPTYS REIT 101121101 1,984 212 11.96 130 4.03 0.0035
2024-02-12 2023-12-31 13F BOSTON PPTYS REIT 101121101 1,772 -187 -9.55 124 6.90 0.0037
2024-05-20 2023-09-30 13F/A-1 BOSTON PPTYS REIT 101121101 1,959 199 11.31 117 14.85 0.0039
2023-11-14 2023-09-30 13F BOSTON PPTYS REIT 101121101 1,959 199 117 0.0039
2024-05-20 2023-06-30 13F/A-1 BOSTON PPTYS REIT 101121101 1,760 -819 -31.76 101 -27.34 0.0033
2023-08-04 2023-06-30 13F BOSTON PPTYS REIT 101121101 1,760 -819 101 0.0033
2024-05-20 2023-03-31 13F/A-1 BOSTON PPTYS REIT 101121101 2,579 1,891 274.85 140 202.17 0.0047
2023-04-25 2023-03-31 13F BOSTON PPTYS REIT 101121101 2,579 1,891 140 0.0047
2023-02-06 2022-12-31 13F BOSTON PPTYS REIT 101121101 688 -137 -16.61 46 -25.81 0.0020
2022-11-10 2022-09-30 13F BOSTON PPTYS REIT 101121101 825 223 37.04 62 14.81 0.0029
2022-08-01 2022-06-30 13F BOSTON PPTYS REIT 101121101 602 -312 -34.14 54 -55.00 0.0025
2022-04-28 2022-03-31 13F BOSTON PPTYS REIT 101121101 914 -119 -11.52 120 0.84 0.0048
2022-01-20 2021-12-31 13F BOSTON PPTYS REIT 101121101 1,033 354 52.14 119 60.81 0.0044
2021-11-02 2021-09-30 13F/A-1 BOSTON PPTYS REIT 101121101 679 49 7.78 74 2.78 0.0030
2021-08-06 2021-06-30 13F BOSTON PPTYS REIT 101121101 630 217 52.54 72 71.43 0.0030
2021-04-23 2021-03-31 13F BOSTON PPTYS REIT 101121101 413 48 13.15 42 20.00 0.0020
2021-02-02 2020-12-31 13F BOSTON PPTYS REIT 101121101 365 29 8.63 35 29.63 0.0019
2020-10-27 2020-09-30 13F BOSTON PPTYS REIT 101121101 336 25 8.04 27 -3.57 0.0017
2020-07-16 2020-06-30 13F BOSTON PPTYS REIT 101121101 311 -381 -55.06 28 -55.56 0.0018
2020-04-27 2020-03-31 13F BOSTON PPTYS REIT 101121101 692 -150 -17.81 63 -45.69 0.0051
2020-01-30 2019-12-31 13F BOSTON PPTYS REIT 101121101 842 525 165.62 116 182.93 0.0087
2019-11-01 2019-09-30 13F BOSTON PPTYS REIT 101121101 317 200 170.94 41 173.33 0.0035
2019-08-05 2019-06-30 13F BOSTON PPTYS REIT 101121101 117 0 0.00 15 -6.25 0.0015
2019-05-01 2019-03-31 13F BOSTON PPTYS REIT 101121101 117 -24 -17.02 16 6.67 0.0018
2019-02-05 2018-12-31 13F BOSTON PPTYS REIT 101121101 141 29 25.89 15 7.14 0.0021
2018-11-01 2018-09-30 13F BOSTON PPTYS REIT 101121101 112 0 0.00 14 0.00 0.0017
2018-07-30 2018-06-30 13F BOSTON PPTYS REIT 101121101 112 -3 -2.61 14 0.00 0.0020
2018-05-08 2018-03-31 13F BOSTON PPTYS REIT 101121101 115 1 0.88 14 -6.67 0.0022
2018-02-13 2017-12-31 13F BOSTON PROPERTIES INC COM REIT 101121101 114 0 0.00 15 7.14 0.0025
2017-11-15 2017-09-30 13F/A-1 BOSTON PROPERTIES INC COM REIT 101121101 114 -17 -12.98 14 -12.50 0.0024
2017-08-07 2017-06-30 13F BOSTON PROPERTIES INC COM REIT 101121101 131 27 25.96 16 23.08 0.0030
2017-05-12 2017-03-31 13F/A-1 BOSTON PROPERTIES INC COM REIT 101121101 104 0 0.00 13 0.00 0.0026
2017-05-12 2017-03-31 13F BOSTON PROPERTIES INC COM REIT 101121101 104 13
2017-02-14 2016-12-31 13F BOSTON PROPERTIES INC COM REIT 101121101 104 104 13 0.0031
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
(%)
2022-01-19 2021-12-31 13F BOSTON PPTYS REIT Call 0 -100.00 0 -100.00 n/a n/a n/a
2021-10-22 2021-09-30 13F BOSTON PPTYS REIT Call 630 72 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.