We are live on !
Find out more
Simplex Trading Portfolio holdings
AUM
$184B
Turnover
28.44%
1-Year Est. Return
51.71%
Simplex Trading is a market maker that trades for its own account, mainly in US stock options and options on futures, using software it builds itself. Its work pairs software developers with data-driven traders. It was founded in Chicago in 2004, and Erik Swanson, who joined straight out of college as a trader, has been its chief executive since 2014. It also invests in early-stage financial and technology start-ups.
This Fund
S&P 500
This Quarter Est. Return
-0.22%
1 Year Est. Return
+51.71%
3 Year Est. Return
+194.66%
5 Year Est. Return
+164.83%
10 Year Est. Return
+968.67%
AUM
$184B
AUM Growth
+$13.3B
(+7.8%)
Cap. Flow
-$519M
Cap. Flow % of AUM
Cap. Flow %
-0.28%
Top 10 Holdings %
Top 10 Hldgs %
50.68%
Holding
10,644
New
1,493
Increased
3,697
Reduced
3,633
Closed
1,534
Avg Time Held
Equity + Options
3
years
Top 10 Avg Time Held
Equity + Options
3.9
years
Top 20 Avg Time Held
Equity + Options
4.3
years
Avg Time Held Equity only
0.5
years
Top 10 Avg Time Held Equity only
0.5
years
Top 20 Avg Time Held Equity only
0.4
years
Top Buys
| Rank | Stock | Value |
|---|---|---|
| 1 |
iShares 20+ Year Treasury Bond ETF
TLT
|
+$92.6M |
| 2 |
iShares iBoxx $ High Yield Corporate Bond ETF
HYG
|
+$80.6M |
| 3 |
Amazon
AMZN
|
+$26.3M |
| 4 |
State Street Industrial Select Sector SPDR ETF
XLI
|
+$25.7M |
| 5 |
SPDR Gold Trust
GLD
|
+$20.7M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
Alphabet (Google) Class A
GOOGL
|
+$128M |
| 2 |
NVIDIA
NVDA
|
+$97.8M |
| 3 |
Tesla
TSLA
|
+$53.9M |
| 4 |
Micron Technology
MU
|
+$50M |
| 5 |
United States Oil Fund
USO
|
+$49.2M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Miscellaneous | 98.84% |
| 2 | Technology | 0.45% |
| 3 | Consumer Discretionary | 0.14% |
| 4 | Healthcare | 0.14% |
| 5 | Financials | 0.1% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | Held Since | |
|---|---|---|---|---|---|---|---|
3001
Victoria's Secret
VSXY
$8.35B
| $802K | ﹤0.01% |
9,069
+6,838
| +306% | +$575K |
2026 Q2
1 quarter
|
|
3002
CALL
Tradr 2X Long SMR Daily ETF
SMU
$48.9M
| $802K | ﹤0.01% |
61,300
+50,175
| +451% | +$1.21M |
2025 Q3
4 quarters
|
|
3003
S&P Global
SPGI
$136B
| $802K | ﹤0.01% |
2,033
+458
| +29% | +$194K |
2026 Q2
1 quarter
|
|
3004
PUT
Tarsus Pharmaceuticals
TARS
$3.79B
| $802K | ﹤0.01% |
10,200
+8,400
| +467% | +$584K |
2026 Q2
1 quarter
|
|
3005
CALL
Aeva Technologies
AEVA
$825M
| $802K | ﹤0.01% |
57,100
+2,000
| +4% | +$36.1K |
2020 Q4
23 quarters
|
|
3006
CALL
Silvia, Inc. Common Stock
SVIA
$236M
| $801K | ﹤0.01% |
206,700
+57,900
| +39% | +$136K |
2025 Q3
4 quarters
|
|
3007
CALL
Amplitude
AMPL
$2.21B
| $799K | ﹤0.01% |
57,700
+900
| +2% | +$10.4K |
2021 Q4
19 quarters
|
|
3008
CALL
FedEx Freight
FDXF
$19.6B
| $798K | ﹤0.01% |
7,300
+6,400
| +711% | +$876K |
2026 Q2
1 quarter
|
|
3009
Grayscale Bitcoin Mini Trust ETF
BTC
$3.78B
| $797K | ﹤0.01% |
+21,580
| New | +$679K |
2026 Q3
0 quarters
|
|
3010
CALL
FT Vest Gold Strategy Target Income ETF
IGLD
$550M
| $797K | ﹤0.01% |
15,600
-48,500
| -76% | -$1.03M |
2022 Q2
17 quarters
|
|
3011
PUT
General Dynamics
GD
$98.1B
| $796K | ﹤0.01% |
2,400
-3,900
| -62% | -$1.45M |
2014 Q4
47 quarters
|
|
3012
PUT
Digital Turbine
APPS
$890M
| $796K | ﹤0.01% |
71,700
+2,100
| +3% | +$22.7K |
2021 Q2
21 quarters
|
|
3013
CALL
ING
ING
$93.7B
| $795K | ﹤0.01% |
22,400
+14,700
| +191% | +$513K |
2016 Q4
39 quarters
|
|
3014
CALL
SS&C Technologies
SSNC
$18.6B
| $794K | ﹤0.01% |
10,300
+5,500
| +115% | +$423K |
2017 Q3
36 quarters
|
|
3015
Grayscale Chainlink Trust ETF
GLNK
$105M
| $793K | ﹤0.01% |
62,934
+57,371
| +1,031% | +$513K |
2025 Q4
3 quarters
|
|
3016
ProShares S&P 500 Dividend Aristocrats ETF
NOBL
$12.2B
| $793K | ﹤0.01% |
14,652
+5,132
| +54% | +$293K |
2026 Q2
1 quarter
|
|
3017
CALL
LendingTree
TREE
$496M
| $792K | ﹤0.01% |
32,400
+18,200
| +128% | +$610K |
2015 Q4
43 quarters
|
|
3018
MACOM Technology Solutions
MTSI
$18.8B
| $792K | ﹤0.01% |
2,779
+112
| +4% | +$31.4K |
2026 Q1
2 quarters
|
|
3019
PUT
EPAM Systems
EPAM
$8.36B
| $791K | ﹤0.01% |
7,300
-2,200
| -23% | -$227K |
2018 Q2
33 quarters
|
|
3020
PUT
Butterfly Network
BFLY
$1.78B
| $790K | ﹤0.01% |
88,200
-57,100
| -39% | -$463K |
2024 Q1
10 quarters
|
|
3021
PUT
Inter&Co
INTR
$1.75B
| $789K | ﹤0.01% |
147,800
+141,100
| +2,106% | +$773K |
2023 Q4
11 quarters
|
|
3022
PUT
Advanced Energy
AEIS
$9.26B
| $789K | ﹤0.01% |
2,800
+1,900
| +211% | +$556K |
2026 Q1
2 quarters
|
|
3023
CALL
Rezolve AI
RZLV
$521M
| $788K | ﹤0.01% |
363,300
-232,800
| -39% | -$576K |
2025 Q1
6 quarters
|
|
3024
PUT
Skyward Specialty Insurance
SKWD
$2.78B
| $787K | ﹤0.01% |
14,900
+200
| +1% | +$11.7K |
2026 Q1
2 quarters
|
|
3025
PUT
Freedom Holding
FRHC
$10.1B
| $786K | ﹤0.01% |
4,700
+3,300
| +236% | +$529K |
2022 Q4
15 quarters
|
|
Similar funds
Simplex Trading's Q3 2026 Portfolio in Review
As of Q3 2026, Simplex Trading held 10,644 positions worth $184B, up 7.8% from $171B the previous quarter. Its ten largest holdings account for 51% of the portfolio.
Simplex Trading's Q3 2026 filing shows 1,493 new, 3,697 increased, 3,633 reduced and 1,534 closed positions. Its largest new stake was iShares iBoxx $ High Yield Corporate Bond ETF: 1,017,542 shares worth $78.6M. The largest sale was Alphabet (Google) Class A, an estimated $128M.
By sector, the portfolio is most concentrated in Miscellaneous at 99% of assets, up from 98% a quarter earlier, followed by Technology and Consumer Discretionary.
- Simplex Trading's largest Q3 2026 buy was iShares iBoxx $ High Yield Corporate Bond ETF: 1,017,542 shares worth $78.6M.
- Simplex Trading added most to iShares 20+ Year Treasury Bond ETF in Q3 2026, an estimated $92.6M increase.
- Simplex Trading's biggest Q3 2026 reduction was NVIDIA, cutting an estimated $97.8M.
- Simplex Trading fully exited Alphabet (Google) Class A in Q3 2026, selling an estimated $128M.
- Simplex Trading's ten largest holdings make up 51% of its $184B portfolio in Q3 2026.
- Simplex Trading opened 1,493 new positions and closed 1,534 in Q3 2026.
- Simplex Trading's portfolio value rose 7.8% quarter-over-quarter to $184B.
Based on Simplex Trading's 13F filing for Q3 2026, filed 4 Nov 2026.