Shareholder Report
|
6 Months Ended |
|
Jun. 30, 2026
USD ($)
Holding
|
|---|
| Shareholder Report [Line Items] |
|
| Document Type |
N-CSRS
|
| Amendment Flag |
false
|
| Registrant Name |
Gabelli Investor Funds, Inc.
|
| Entity Central Index Key |
0000893783
|
| Entity Investment Company Type |
N-1A
|
| Document Period End Date |
Jun. 30, 2026
|
| C000002886 |
|
| Shareholder Report [Line Items] |
|
| Fund Name |
The Gabelli ABC Fund
|
| Class Name |
Class I
|
| Trading Symbol |
GABCX
|
| Annual or Semi-Annual Statement [Text Block] |
This semi-annual shareholder report contains important information about The Gabelli ABC Fund (the "Fund") for the period of January 1, 2026 to June 30, 2026.
|
| Additional Information [Text Block] |
You can find additional information about the Fund, including the Fund’s prospectus, financial information, holdings, and proxy voting information, at https://gabelli.com/ticker/GABCX/. You can also request information by contacting us at 800-GABELLI (800-422-3554).
|
| Additional Information Phone Number |
800-GABELLI (800-422-3554)
|
| Additional Information Website |
https://gabelli.com/ticker/GABCX/
|
| Expenses [Text Block] |
What were the Fund costs for the last six months?
(based on a hypothetical $10,000 investment)
Table Summary
Class Name |
Costs of a $10k Investment |
Costs Paid as a % of a $10k Investment |
The Gabelli ABC Fund - Class I
|
$46 |
0.91% |
|
| Expenses Paid, Amount |
$ 46
|
| Expense Ratio, Percent |
0.91%
|
| Factors Affecting Performance [Text Block] |
How did the Fund perform?
For the six months ended June 30, 2026, the Gabelli ABC Fund underperformed its broad-based benchmark, the S&P 500 Index, and outperformed its comparatives, the S&P SmallCap 600 Index and Lipper US Treasury Money Market Fund Average. Global M&A activity hit multiple records in the period, driven by larger deals, a surge in mega-transactions, and strong momentum in the US and Europe. Year-to-date, all-cash deals accounted for 63% of transactions, all-stock deals 14%, and cash-and-stock deals the remaining 23%. Contributors included Lennar Corp Class A, Apellis Pharmaceuticals, Inc., and Rogers Corp. Detractors included Fox Corp., KKR & Co., and Pan American Silver Co.
|
| Performance Past Does Not Indicate Future [Text] |
Past performance does not guarantee future results.
|
| Line Graph [Table Text Block] |
Table Summary
|
The Gabelli ABC Fund - Class I |
S&P 500 Index |
ICE BofA 3 Month U.S. Treasury Bill Index |
Lipper U.S. Treasury Money-Market Fund Average |
06/16 |
10,000 |
10,000 |
10,000 |
10,000 |
06/17 |
10,328 |
11,790 |
10,049 |
10,016 |
06/18 |
10,472 |
13,484 |
10,186 |
10,105 |
06/19 |
10,714 |
14,889 |
10,421 |
10,301 |
06/20 |
10,731 |
16,007 |
10,592 |
10,419 |
06/21 |
11,649 |
22,537 |
10,601 |
10,421 |
06/22 |
11,360 |
20,143 |
10,619 |
10,431 |
06/23 |
11,939 |
24,090 |
11,001 |
10,791 |
06/24 |
12,646 |
30,006 |
11,595 |
11,346 |
06/25 |
13,608 |
34,555 |
12,137 |
11,851 |
06/26 |
14,394 |
42,268 |
12,603 |
12,283 |
|
| Average Annual Return [Table Text Block] |
Table Summary
|
6 months |
1 Year |
5 Year |
10 Year |
The Gabelli ABC Fund - Class I |
3.76% |
7.36% |
4.63% |
3.86% |
S&P 500 Index |
10.21% |
22.32% |
13.41% |
15.51% |
ICE BofA 3 Month U.S. Treasury Bill Index |
1.74% |
3.84% |
3.52% |
2.34% |
Lipper U.S. Treasury Money-Market Fund Average |
1.68% |
3.65% |
3.34% |
2.08% |
|
| No Deduction of Taxes [Text Block] |
The table and graph presented above do not reflect the deduction of taxes a shareholder would pay on Fund distributions or the redemption of Fund shares.
|
| AssetsNet |
$ 425,781,505
|
| Holdings Count | Holding |
257
|
| Advisory Fees Paid, Amount |
$ 1,046,866
|
| InvestmentCompanyPortfolioTurnover |
56.00%
|
| Additional Fund Statistics [Text Block] |
- Total Net Assets$425,781,505
- Number of Portfolio Holdings257
- Portfolio Turnover Rate56%
- Management Fees$1,046,866
|
| Holdings [Text Block] |
Portfolio Weighting (% of net assets)
Table Summary
Common Stocks |
60.1% |
Common Stocks – Securities Sold Short |
(13.1)% |
U.S. Government Obligations |
40.5% |
Rights |
0.5% |
Closed-End Funds |
0.1% |
Other Assets and Liabilities (Net) |
11.9% |
Industry Allocation (% of net assets)
Table Summary
Value |
Value |
U.S. Government Obligations |
40.5% |
Building and Construction |
18.1% |
Building and Construction - Short |
(12.9)% |
Energy and Utilities |
7.4% |
Health Care |
6.1% |
Entertainment |
4.2% |
Financial Services |
4.2% |
Diversified Industrial |
3.8% |
Other Industry sectors |
16.7% |
Other Assets and Liabilities (Net) |
11.9% |
|
| Largest Holdings [Text Block] |
Top 10 Holdings (% of net assets)
Table Summary
Lennar Corp. Cl B |
16.7% |
Lennar Corp. Cl A |
(12.9)% |
Chart Industries Inc. |
2.4% |
TXNM Energy Inc. |
1.8% |
Janus Henderson Group Ltd. |
1.5% |
Fox Corp. Cl B |
1.4% |
Taylor Morrison Home Corp. |
1.3% |
The AES Corp. |
1.3% |
Pan American Silver Corp. |
1.2% |
Apogee Therapeutics Inc. |
0.9% |
|
| Material Fund Change [Text Block] |
|
| Updated Prospectus Phone Number |
800-GABELLI (800-422-3554)
|
| Updated Prospectus Email Address |
<span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 12px; font-weight: 400; grid-area: auto; line-height: 18px; margin: 0px; overflow: visible; text-align: justify; text-align-last: left; white-space-collapse: preserve-breaks;">info@gabelli.com</span>
|
| Updated Prospectus Web Address |
https://gabelli.com/ticker/GABCX/
|
| C000050409 |
|
| Shareholder Report [Line Items] |
|
| Fund Name |
The Gabelli ABC Fund
|
| Class Name |
Advisor Class
|
| Trading Symbol |
GADVX
|
| Annual or Semi-Annual Statement [Text Block] |
This semi-annual shareholder report contains important information about The Gabelli ABC Fund (the "Fund") for the period of January 1, 2026 to June 30, 2026.
|
| Additional Information [Text Block] |
You can find additional information about the Fund, including the Fund’s prospectus, financial information, holdings, and proxy voting information, at https://gabelli.com/ticker/GADVX/. You can also request information by contacting us at 800-GABELLI (800-422-3554).
|
| Additional Information Phone Number |
800-GABELLI (800-422-3554)
|
| Additional Information Website |
https://gabelli.com/ticker/GADVX/
|
| Expenses [Text Block] |
What were the Fund costs for the last six months?
(based on a hypothetical $10,000 investment)
Table Summary
Class Name |
Costs of a $10k Investment |
Costs Paid as a % of a $10k Investment |
The Gabelli ABC Fund - Advisor Class
|
$59 |
1.16% |
|
| Expenses Paid, Amount |
$ 59
|
| Expense Ratio, Percent |
1.16%
|
| Factors Affecting Performance [Text Block] |
How did the Fund perform?
For the six months ended June 30, 2026, the Gabelli ABC Fund underperformed its broad-based benchmark, the S&P 500 Index, and outperformed its comparatives, the S&P SmallCap 600 Index and Lipper US Treasury Money Market Fund Average. Global M&A activity hit multiple records in the period, driven by larger deals, a surge in mega-transactions, and strong momentum in the US and Europe. Year-to-date, all-cash deals accounted for 63% of transactions, all-stock deals 14%, and cash-and-stock deals the remaining 23%. Contributors included Lennar Corp Class A, Apellis Pharmaceuticals, Inc., and Rogers Corp. Detractors included Fox Corp., KKR & Co., and Pan American Silver Co.
|
| Performance Past Does Not Indicate Future [Text] |
Past performance does not guarantee future results.
|
| Line Graph [Table Text Block] |
Table Summary
|
The Gabelli ABC Fund - Advisor Class |
S&P 500 Index |
ICE BofA 3 Month U.S. Treasury Bill Index |
Lipper U.S. Treasury Money-Market Fund Average |
06/16 |
10,000 |
10,000 |
10,000 |
10,000 |
06/17 |
10,295 |
11,790 |
10,049 |
10,016 |
06/18 |
10,420 |
13,484 |
10,186 |
10,105 |
06/19 |
10,635 |
14,889 |
10,421 |
10,301 |
06/20 |
10,620 |
16,007 |
10,592 |
10,419 |
06/21 |
11,503 |
22,537 |
10,601 |
10,421 |
06/22 |
11,197 |
20,143 |
10,619 |
10,431 |
06/23 |
11,735 |
24,090 |
11,001 |
10,791 |
06/24 |
12,398 |
30,006 |
11,595 |
11,346 |
06/25 |
13,302 |
34,555 |
12,137 |
11,851 |
06/26 |
14,038 |
42,268 |
12,603 |
12,283 |
|
| Average Annual Return [Table Text Block] |
Table Summary
|
6 months |
1 Year |
5 Year |
10 Year |
The Gabelli ABC Fund - Advisor Class |
3.61% |
7.13% |
4.38% |
3.61% |
S&P 500 Index |
10.21% |
22.32% |
13.41% |
15.51% |
ICE BofA 3 Month U.S. Treasury Bill Index |
1.74% |
3.84% |
3.52% |
2.34% |
Lipper U.S. Treasury Money-Market Fund Average |
1.68% |
3.65% |
3.34% |
2.08% |
|
| No Deduction of Taxes [Text Block] |
The table and graph presented above do not reflect the deduction of taxes a shareholder would pay on Fund distributions or the redemption of Fund shares.
|
| AssetsNet |
$ 425,781,505
|
| Holdings Count | Holding |
257
|
| Advisory Fees Paid, Amount |
$ 1,046,866
|
| InvestmentCompanyPortfolioTurnover |
56.00%
|
| Additional Fund Statistics [Text Block] |
- Total Net Assets$425,781,505
- Number of Portfolio Holdings257
- Portfolio Turnover Rate56%
- Management Fees$1,046,866
|
| Holdings [Text Block] |
Portfolio Weighting (% of net assets)
Table Summary
Common Stocks |
60.1% |
Common Stocks – Securities Sold Short |
(13.1)% |
U.S. Government Obligations |
40.5% |
Rights |
0.5% |
Closed-End Funds |
0.1% |
Other Assets and Liabilities (Net) |
11.9% |
Industry Allocation (% of net assets)
Table Summary
Value |
Value |
U.S. Government Obligations |
40.5% |
Building and Construction |
18.1% |
Building and Construction - Short |
(12.9)% |
Energy and Utilities |
7.4% |
Health Care |
6.1% |
Entertainment |
4.2% |
Financial Services |
4.2% |
Diversified Industrial |
3.8% |
Other Industry sectors |
16.7% |
Other Assets and Liabilities (Net) |
11.9% |
|
| Largest Holdings [Text Block] |
Top 10 Holdings (% of net assets)
Table Summary
Lennar Corp. Cl B |
16.7% |
Lennar Corp. Cl A |
(12.9)% |
Chart Industries Inc. |
2.4% |
TXNM Energy Inc. |
1.8% |
Janus Henderson Group Ltd. |
1.5% |
Fox Corp. Cl B |
1.4% |
Taylor Morrison Home Corp. |
1.3% |
The AES Corp. |
1.3% |
Pan American Silver Corp. |
1.2% |
Apogee Therapeutics Inc. |
0.9% |
|
| Material Fund Change [Text Block] |
|
| Updated Prospectus Phone Number |
800-GABELLI (800-422-3554)
|
| Updated Prospectus Email Address |
<span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 12px; font-weight: 400; grid-area: auto; line-height: 18px; margin: 0px; overflow: visible; text-align: justify; text-align-last: left; white-space-collapse: preserve-breaks;">info@gabelli.com</span>
|
| Updated Prospectus Web Address |
https://gabelli.com/ticker/GADVX/
|
