Forrester Research, Inc.
DE ˙ DB ˙ US3465631097
5,90 € ↓ -0,20 (-3,28%)
2026-06-03
DEL PRIS
SecurityDE:FFR / Forrester Research, Inc.
InstitutionRhumbline Advisers
Latest Disclosed Ownership14,559 shares
Latest Disclosed Value $ 82,397
Rhumbline Advisers reports 3.28% decrease in ownership of FFR / Forrester Research, Inc.

On May 12, 2026 - Rhumbline Advisers filed a 13F-HR form disclosing ownership of 14,559 shares of Forrester Research, Inc. (DE:FFR) valued at $70,466 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 15,053 shares of Forrester Research, Inc.. This represents a change in shares of -3.28% during the quarter. The current value of the position is $85,898 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)
2026-05-12 2026-03-31 13F FORRESTER RESH INC COM COM 346563109 14,559 -494 -3.28 82 -32.79 0.0001
2026-02-13 2025-12-31 13F FORRESTER RESH INC COM COM 346563109 15,053 -2,410 -13.80 122 -34.05 0.0001
2025-11-06 2025-09-30 13F FORRESTER RESH INC COM COM 346563109 17,463 -624 -3.45 185 3.35 0.0001
2025-08-12 2025-06-30 13F FORRESTER RESH INC COM COM 346563109 18,087 300 1.69 179 9.15 0.0002
2025-05-29 2025-03-31 13F/A-1 FORRESTER RESH INC COM COM 346563109 17,787 -784 -4.22 164 -43.45 0.0002
2025-04-08 2025-03-31 13F FORRESTER RESH INC COM COM 346563109 17,787 -784 164 0.0002
2025-05-29 2024-12-31 13F/A-1 FORRESTER RESH INC COM COM 346563109 18,571 1,337 7.76 291 -6.45 0.0003
2025-01-30 2024-12-31 13F FORRESTER RESH INC COM COM 346563109 18,571 1,337 291 0.0003
2024-11-12 2024-09-30 13F FORRESTER RESH INC COM COM 346563109 17,234 -717 -3.99 310 1.31 0.0003
2024-08-01 2024-06-30 13F FORRESTER RESH INC COM COM 346563109 17,951 2,661 17.40 307 -6.99 0.0003
2024-05-09 2024-03-31 13F FORRESTER RESH INC COM COM 346563109 15,290 -18,132 -54.25 330 -63.28 0.0003
2024-02-08 2023-12-31 13F FORRESTER RESH INC COM COM 346563109 33,422 -1,065 -3.09 896 -10.04 0.0009
2023-11-09 2023-09-30 13F FORRESTER RESH INC COM COM 346563109 34,487 741 2.20 997 1.53 0.0012
2023-08-08 2023-06-30 13F FORRESTER RESH INC COM COM 346563109 33,746 142 0.42 982 98,000.00 0.0011
2023-05-11 2023-03-31 13F FORRESTER RESH INC COM COM 346563109 33,604 1,737 5.45 1 -99.91 0.0013
2023-02-14 2022-12-31 13F FORRESTER RESH INC COM COM 346563109 31,867 2,526 8.61 1,140 7.85 0.0015
2022-11-10 2022-09-30 13F FORRESTER RESH INC COM COM 346563109 29,341 1,542 5.55 1,057 -20.53 0.0016
2022-08-11 2022-06-30 13F FORRESTER RESH INC COM COM 346563109 27,799 931 3.47 1,330 -12.27 0.0019
2022-05-12 2022-03-31 13F FORRESTER RESH INC COM COM 346563109 26,868 1,227 4.79 1,516 0.66 0.0020
2022-02-10 2021-12-31 13F FORRESTER RESH INC COM COM 346563109 25,641 -300 -1.16 1,506 17.84 0.0018
2021-11-12 2021-09-30 13F FORRESTER RESH INC COM COM 346563109 25,941 -3,958 -13.24 1,278 -6.65 0.0017
2021-08-05 2021-06-30 13F FORRESTER RESH INC COM COM 346563109 29,899 -1,490 -4.75 1,369 2.70 0.0018
2021-05-06 2021-03-31 13F FORRESTER RESH INC COM COM 346563109 31,389 777 2.54 1,333 3.90 0.0018
2021-02-10 2020-12-31 13F FORRESTER RESH INC COM COM 346563109 30,612 1,116 3.78 1,283 32.68 0.0018
2020-11-12 2020-09-30 13F FORRESTER RESH INC COM COM 346563109 29,496 -1,422 -4.60 967 -2.42 0.0015
2020-08-13 2020-06-30 13F FORRESTER RESH INC COM COM 346563109 30,918 -3,681 -10.64 991 -1.98 0.0017
2020-05-06 2020-03-31 13F FORRESTER RESH INC COM COM 346563109 34,599 688 2.03 1,011 -28.50 0.0021
2020-02-05 2019-12-31 13F FORRESTER RESH INC COM COM 346563109 33,911 2,195 6.92 1,414 38.76 0.0024
2019-10-23 2019-09-30 13F FORRESTER RESH INC COM COM 346563109 31,716 717 2.31 1,019 -30.11 0.0019
2019-08-14 2019-06-30 13F FORRESTER RESH INC COM COM 346563109 30,999 1,350 4.55 1,458 1.67 0.0027
2019-05-01 2019-03-31 13F FORRESTER RESH INC COM COM 346563109 29,649 144 0.49 1,434 8.72 0.0028
2019-01-31 2018-12-31 13F FORRESTER RESH INC COM COM 346563109 29,505 5,194 21.36 1,319 18.19 0.0029
2018-11-07 2018-09-30 13F FORRESTER RESH INC COM COM 346563109 24,311 -591 -2.37 1,116 6.79 0.0022
2018-08-06 2018-06-30 13F FORRESTER RESH INC COM COM 346563109 24,902 502 2.06 1,045 3.36 0.0021
2018-05-02 2018-03-31 13F FORRESTER RESH INC COM COM 346563109 24,400 100 0.41 1,011 -5.87 0.0021
2018-02-09 2017-12-31 13F FORRESTER RESH INC COM COM 346563109 24,300 2,850 13.29 1,074 19.60 0.0022
2017-11-06 2017-09-30 13F FORRESTER RESH INC COM COM 346563109 21,450 490 2.34 898 9.38 0.0020
2017-08-02 2017-06-30 13F FORRESTER RESH INC COM COM 346563109 20,960 -63 -0.30 821 -1.79 0.0019
2017-05-02 2017-03-31 13F FORRESTER RESH INC COM COM 346563109 21,023 5,501 35.44 836 25.34 0.0020
2017-01-27 2016-12-31 13F FORRESTER RESH INC COM COM 346563109 15,522 390 2.58 667 13.24 0.0017
2016-11-08 2016-09-30 13F FORRESTER RESH INC COM COM 346563109 15,132 810 5.66 589 11.55 0.0016
2016-08-11 2016-06-30 13F FORRESTER RESH INC COM COM 346563109 14,322 809 5.99 528 16.30 0.0016
2016-05-02 2016-03-31 13F FORRESTER RESEARCH INC COMMON COM 346563109 13,513 100 0.75 454 18.85 0.0014
2016-02-03 2015-12-31 13F FORRESTER RESEARCH INC COMMON COM 346563109 13,413 -1,720 -11.37 382 -19.75 0.0012
2015-11-04 2015-09-30 13F FORRESTER RESEARCH INC COMMON COM 346563109 15,133 -24,833 -62.14 476 -66.94 0.0016
2015-08-04 2015-06-30 13F FORRESTER RESEARCH INC COMMON COM 346563109 39,966 -3,050 -7.09 1,440 -8.98 0.0046
2015-05-12 2015-03-31 13F FORRESTER RESEARCH INC COMMON COM 346563109 43,016 5,900 15.90 1,582 8.28 0.0046
2015-02-06 2014-12-31 13F FORRESTER RESEARCH INC COMMON COM 346563109 37,116 -175 -0.47 1,461 6.25 0.0042
2014-11-12 2014-09-30 13F FORRESTER RESEARCH INC COMMON COM 346563109 37,291 -7,350 -16.46 1,375 -18.69 0.0041
2014-08-06 2014-06-30 13F FORRESTER RESEARCH INC COMMON COM 346563109 44,641 -2,900 -6.10 1,691 -0.76 0.0050
2014-05-06 2014-03-31 13F FORRESTER RESEARCH INC COMMON COM 346563109 47,541 -3,515 -6.88 1,704 -12.75 0.0051
2014-02-03 2013-12-31 13F FORRESTER RESEARCH INC COMMON COM 346563109 51,056 -100 -0.20 1,953 3.88 0.0058
2013-11-05 2013-09-30 13F FORRESTER RESEARCH INC COMMON COM 346563109 51,156 -7,726 -13.12 1,880 -12.96 0.0058
2013-08-07 2013-06-30 13F FORRESTER RESEARCH INC COMMON COM 346563109 58,882 58,882 2,160 0.0069
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.