Summary
Updated Aug 31, 2026
Bulldog Investors, LLP is 10% Owner of MFS INVESTMENT GRADE MUNICIPAL TRUST (CXH). 5 SEC Form 4 filings on record, most recently on 26 February 2026. Most recent open-market trade: bought $11K of CXH on 26 February 2026. Lifetime open-market purchases: $129K. Lifetime open-market sales: $40K. Historical track record: 3/5 stars across 6 tracked purchases.
Recent Transactions
8Every recent SEC Form 4 transaction Bulldog Investors, LLP has reported, most recent first.
Track Record
InsiderAlpha computes a forward-return-based score for every insider with enough Form 4 purchase history. The metrics below reflect realized performance after each tracked open-market purchase.
| Metric | Value |
|---|---|
| InsiderAlpha rating | ★★★☆☆ (3/5) |
| Total purchases tracked | 6 |
| Purchases with forward-return data | 6 |
| 30-day win rate | 83% |
| 90-day win rate | 67% |
| Avg 5-day return | +0.69% |
| Avg 30-day return | +1.46% |
| Avg 90-day return | +1.92% |
| Best 30-day return | +3.00% |
Trading Pattern
InsiderAlpha's records for Bulldog Investors, LLP go back to 2026: 5 primary Form 4 filings, an average of 5.0 per year. The typical open-market purchase is $21K (6 buys totaling $129K). The largest single buy on record is $80K of CXH in 2026. Sales side: 1 recorded sale totaling $40K, so the filing history runs buy-heavy by dollar value. No transaction on record carries a Rule 10b5-1 flag - the filings look discretionary rather than pre-scheduled, which makes their timing more informative as a signal.
Most Active Insiders Right Now
Bulldog Investors, LLP has no co-filers on record, so these are insiders with the largest open-market activity across the market in the last 90 days.
- Vyacheslav Kim - $119.18M of KSPI open-market activity in the last 90 days
- Olivier Pomel - $118.60M of DDOG open-market activity in the last 90 days
- Patrizio Vinciarelli - $118.12M of VICR open-market activity in the last 90 days
- Ronda E. Stryker - $117.78M of SYK open-market activity in the last 90 days
- Gang Ye - $117.60M of SE open-market activity in the last 90 days
- SVF Pauling (Cayman) Ltd - $116.40M of RLAY open-market activity in the last 90 days
More Notable Insiders
Other corporate insiders with significant SEC Form 4 track records on InsiderAlpha:
Frequently Asked Questions
What is Bulldog Investors, LLP?
Bulldog Investors, LLP is an investment firm, tracked as 10% Owner of MFS INVESTMENT GRADE MUNICIPAL TRUST (CXH). InsiderAlpha holds 5 primary Form 4 filings for it, the earliest from 2026, updated as new SEC EDGAR filings are processed.
When did Bulldog Investors, LLP last file a Form 4?
The most recent primary Form 4 on record is dated 26 February 2026, one of 5 filings going back to 2026.
Has Bulldog Investors, LLP been buying or selling stock?
Recorded transactions: 6 open-market purchases ($129K) and 1 open-market sale ($40K) across all tracked filings.
How accurate is Bulldog Investors, LLP's historical track record?
Across 6 tracked purchases, Bulldog Investors, LLP averaged +1.5% avg 30-day return with a 83% 30-day win rate. InsiderAlpha rates the track record at 3/5 stars.
Where can I see all of Bulldog Investors, LLP's SEC filings?
All Form 4 filings, transaction values, and 10b5-1 plan flags are listed on this page and updated in real time as new SEC EDGAR filings are processed.
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