Form 13-F position report

BLACKSTONE INC COM STK (DE)

Reported by Penbrook Management LLC

BX CUSIP 09260D107 Manager CIK 0001381055

Reported 17,523 shares, down 1,400 (7.4%) from the prior quarter.

Reported value 13.2%; share count -7.4% vs. the prior quarter.

Reduced
% of reported 13F value 1.54% This manager · Q4 2023
Shares 17,523 Quarter-end amount reported
Reported value $2,294,111 Fair value at quarter end
Consecutive quarters held 19 Through Q4 2023

Reported position value by quarter

Reported position value by quarter

Each bar is a Form 13-F quarter-end snapshot. It does not show trades made within the quarter.

Reported position value by quarter
Date Holding Value
2021-12-31 3206000
2022-03-31 3206000
2022-06-30 2258000
2022-09-30 2061000
2022-12-31 1455830
2023-03-31 1706116
2023-06-30 1805756
2023-09-30 2027410
2023-12-31 2294111
2024-03-31 2301997
2024-06-30 2055080
2024-09-30 2388828
2024-12-31 2689752
2025-03-31 2166590
2025-06-30 2228742
2025-09-30 2528580
2025-12-31 2281272
2026-03-31 2087068
2026-06-30 2135710
2026-09-30 2034433

Quarterly position history

How this manager's reported quarter-end position changed over time.

20 quarters
Quarterly reported position history for BLACKSTONE INC COM STK (DE) held by Penbrook Management LLC.
Quarter Activity Shares Change % of reported 13F Reported value Filed Source filing
Q3 2026 Unchanged 18,150 0 (0.0%) 1.2% $2,034,433 2026-10-16
Q2 2026 Unchanged 18,150 0 (0.0%) 1.36% $2,135,710 2026-07-23
Q1 2026 Added 18,150 +3,350 (22.6%) 1.58% $2,087,068 2026-04-21
Q4 2025 Unchanged 14,800 0 (0.0%) 1.57% $2,281,272 2026-01-06
Q3 2025 Reduced 14,800 -100 (-0.7%) 1.77% $2,528,580 2025-10-22
Q2 2025 Reduced 14,900 -600 (-3.9%) 1.68% $2,228,742 2025-07-25
Q1 2025 Reduced 15,500 -100 (-0.6%) 1.64% $2,166,590 2025-04-01
Q4 2024 Unchanged 15,600 0 (0.0%) 1.83% $2,689,752 2025-01-23
Q3 2024 Reduced 15,600 -1,000 (-6.0%) 1.55% $2,388,828 2024-10-15
Q2 2024 Reduced 16,600 -923 (-5.3%) 1.25% $2,055,080 2024-07-24
Q1 2024 Unchanged 17,523 0 (0.0%) 1.43% $2,301,997 2024-04-18
Q4 2023 Reduced 17,523 -1,400 (-7.4%) 1.54% $2,294,111 2024-01-16
Q3 2023 Reduced 18,923 -500 (-2.6%) 1.49% $2,027,410 2023-10-10
Q2 2023 Unchanged 19,423 0 (0.0%) 1.31% $1,805,756 2023-07-17
Q1 2023 Reduced 19,423 -200 (-1.0%) 1.31% $1,706,116 2023-04-20
Q4 2022 Reduced 19,623 -5,000 (-20.3%) 1.24% $1,455,830 2023-01-24
Q3 2022 Reduced 24,623 -132 (-0.5%) 1.77% $2,061,000 2022-10-31
Q2 2022 Reduced 24,755 -500 (-2.0%) 1.78% $2,258,000 2022-07-29
Q1 2022 Added 25,255 +475 (1.9%) 2.08% $3,206,000 2022-04-26
Q4 2021 Unchanged 24,780 0 (0.0%) 1.93% $3,206,000 2022-01-10
Five years are shown. A free account unlocks the complete reported history. Unlock full history

Who else reported the position

1897 managers reported BLACKSTONE INC COM STK (DE) for Q4 2023.

Managers reporting BLACKSTONE INC COM STK (DE) in Q4 2023.
Manager Activity Shares Change % of reported 13F Reported value Tenure
VANGUARD GROUP INC Added 62,972,648 +880,745 0.18% $8,244,379,075 18 qtrs
BlackRock Inc Added 45,987,551 +71,112 0.15% $6,020,690,136 18 qtrs
Capital World Investors Added 33,738,986 +1,367,581 0.79% $4,417,139,994 19 qtrs
STATE STREET CORPORATION Added 28,182,004 +820,416 0.18% $3,689,587,964 18 qtrs
MORGAN STANLEY Added 24,780,967 +957,846 0.29% $3,244,324,505 18 qtrs
Capital International Investors Reduced 19,496,575 -436,933 0.57% $2,552,523,598 19 qtrs
CHARLES SCHWAB INVESTMENT MANAGEMENT INC Added 14,853,724 +27,955 0.49% $1,944,649,520 18 qtrs
GEODE CAPITAL MANAGEMENT LLC Added 13,934,736 +361,897 0.19% $1,820,255,572 18 qtrs
JPMorgan Chase & Co Added 13,220,741 +1,906,557 0.17% $1,730,859,467 18 qtrs
EDGEWOOD MANAGEMENT LLC Reduced 12,706,649 -154,633 4.8% $1,663,554,487 17 qtrs
Premium adds each manager's conviction percentile across reporting peers.
Filing details and methodology As reported
Report period
December 31, 2023
Filed
January 16, 2024
Filing type
13F-HR
Position type
Stock

Voting authority reported

Sole
0
Shared
0
None
17,523

“None” means the manager reported no voting authority for those shares on non-routine matters. It does not disclose why and is not evidence of securities lending.

Form 13-F is a delayed quarter-end snapshot of disclosed long Section 13(f) securities. It can be filed up to 45 days after quarter end, excludes short positions and most non-U.S. securities, and does not reveal intra-quarter trading. For options, reported shares and value describe the underlying-share exposure; strike, expiry, premium, and written positions are not disclosed.