Institutional Manager · CIK 0001633391
Diana Davis Spencer Foundation
BETHESDA, MD · File #028-16544
Latest AUM
$296.3M
Positions
4
Top-10 Concentration
100.0%
Filings
9
Portfolio Value Over Time
2024-03
2024-06
2024-09
2024-12
2025-03
2025-06
2025-09
2025-12
Biggest QoQ Changes
Ranked by conviction flow (share change × current price) so mark-to-market moves don't dominate. Price effect column shows how much of the $ change was just the stock moving.
| Action | Issuer | Ticker / CUSIP | Δ Shares | Flow ($) | Price Effect |
|---|---|---|---|---|---|
| REDUCE | VANGUARD BD INDEX FD INC | 921937819 | 0 | $0 | -$299,460 |
| REDUCE | VANGUARD SCOTTSDALE FDS | 92206C813 | 0 | $0 | -$829,800 |
| REDUCE | VANGUARD BD INDEX FD INC | 921937835 | 0 | $0 | -$482,430 |
| REDUCE | VANGUARD INDEX FDS | 922908363 | 0 | $0 | +$732,706 |
Filing History
- 13F HOLDINGS REPORTQ/E Dec 20254 pos · $296.3M
- 13F HOLDINGS REPORTQ/E Sep 20254 pos · $297.2M
- 13F HOLDINGS REPORTQ/E Jun 20254 pos · $291.9M
- 13F HOLDINGS REPORTQ/E Mar 20254 pos · $287.8M
- 13F HOLDINGS REPORTQ/E Dec 20244 pos · $283.4M
- 13F HOLDINGS REPORTQ/E Sep 20244 pos · $296.2M
- 13F HOLDINGS REPORTQ/E Jun 20244 pos · $282.5M
- 13F HOLDINGS REPORTQ/E Mar 20243 pos · $260.4M
- 13F HOLDINGS REPORTQ/E Dec 20233 pos · $248.4M
Top 4 Holdings — Dec 2025
| # | Issuer | Ticker | Shares | Value | % of Portfolio |
|---|---|---|---|---|---|
| 1 | VANGUARD BD INDEX FD INC | 921937835 | 1,608,100 | $119.1M | 40.20% |
| 2 | VANGUARD BD INDEX FD INC | 921937819 | 1,426,000 | $111.1M | 37.48% |
| 3 | VANGUARD SCOTTSDALE FDS | 92206C813 | 461,000 | $35.0M | 11.80% |
| 4 | VANGUARD INDEX FDS | 922908363 | 49,675 | $31.2M | 10.51% |