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 | |
|---|---|---|---|---|---|---|---|
2026
PUT
ZoomInfo Technologies
GTM
$983M
| $1.93M | ﹤0.01% |
509,500
+337,800
| +197% | +$1.23M |
2020 Q3
24 quarters
|
|
2027
CALL
PPL Corp
PPL
$26.6B
| $1.93M | ﹤0.01% |
58,700
-126,200
| -68% | -$4.4M |
2014 Q4
47 quarters
|
|
2028
CALL
PPG Industries
PPG
$27.6B
| $1.93M | ﹤0.01% |
18,500
-53,900
| -74% | -$6.09M |
2015 Q4
43 quarters
|
|
2029
ProShares Bitcoin Strategy ETF
BITO
$1.42B
| $1.93M | ﹤0.01% |
+172,083
| New | +$1.65M |
2026 Q3
0 quarters
|
|
2030
Novartis
NVS
$303B
| $1.93M | ﹤0.01% |
+13,509
| New | +$2.05M |
2026 Q3
0 quarters
|
|
2031
PUT
Fervo Energy
FRVO
$3.81B
| $1.92M | ﹤0.01% |
141,600
+126,400
| +832% | +$2.56M |
2026 Q2
1 quarter
|
|
2032
GameStop
GME
$12.9B
| $1.92M | ﹤0.01% |
+78,063
| New | +$1.62M |
2026 Q3
0 quarters
|
|
2033
CALL
ZTO Express
ZTO
$15.3B
| $1.92M | ﹤0.01% |
98,900
+15,100
| +18% | +$336K |
2021 Q2
21 quarters
|
|
2034
Aurora
AUR
$9.29B
| $1.92M | ﹤0.01% |
346,091
-15,073
| -4% | -$94.8K |
2025 Q1
6 quarters
|
|
2035
CALL
Ericsson
ERIC
$34.4B
| $1.92M | ﹤0.01% |
209,400
-65,700
| -24% | -$664K |
2026 Q1
2 quarters
|
|
2036
PUT
Noble Corp
NE
$6.74B
| $1.92M | ﹤0.01% |
45,900
-400
| -0.9% | -$17.3K |
2022 Q1
18 quarters
|
|
2037
PUT
FIVE9
FIVN
$2.1B
| $1.91M | ﹤0.01% |
56,300
+38,400
| +215% | +$1.16M |
2018 Q2
33 quarters
|
|
2038
Peabody Energy
BTU
$2.06B
| $1.91M | ﹤0.01% |
78,405
+6,493
| +9% | +$163K |
2026 Q1
2 quarters
|
|
2039
Lumen Technologies, Inc. Common Stock
LUMN
$4.59B
| $1.91M | ﹤0.01% |
341,229
+264,755
| +346% | +$1.69M |
2026 Q2
1 quarter
|
|
2040
CALL
Birkenstock
BIRK
$6.05B
| $1.91M | ﹤0.01% |
58,900
+36,600
| +164% | +$1.37M |
2023 Q4
11 quarters
|
|
2041
PUT
Levi Strauss
LEVI
$9.24B
| $1.91M | ﹤0.01% |
96,900
-4,400
| -4% | -$98.5K |
2019 Q1
30 quarters
|
|
2042
CALL
Teck Resources
TECK
$31.3B
| $1.91M | ﹤0.01% |
29,000
-4,500
| -13% | -$288K |
2015 Q3
44 quarters
|
|
2043
PUT
Hawaiian Electric Industries
HE
$1.54B
| $1.91M | ﹤0.01% |
213,400
+9,000
| +4% | +$106K |
2023 Q3
12 quarters
|
|
2044
CALL
T. Rowe Price
TROW
$23.6B
| $1.9M | ﹤0.01% |
18,300
-12,500
| -41% | -$1.4M |
2014 Q4
47 quarters
|
|
2045
PUT
Limbach Holdings
LMB
$679M
| $1.9M | ﹤0.01% |
38,900
+35,600
| +1,079% | +$2.05M |
2026 Q1
2 quarters
|
|
2046
PUT
Bath & Body Works
BBWI
$4.38B
| $1.9M | ﹤0.01% |
119,400
+85,200
| +249% | +$1.63M |
2021 Q4
19 quarters
|
|
2047
PUT
Trip.com Group
TCOM
$27.5B
| $1.9M | ﹤0.01% |
48,600
-32,100
| -40% | -$1.38M |
2014 Q4
47 quarters
|
|
2048
PUT
PACS Group
PACS
$7.95B
| $1.9M | ﹤0.01% |
45,700
+35,300
| +339% | +$1.56M |
2024 Q4
7 quarters
|
|
2049
CALL
Forum Markets
FRMM
$38.9M
| $1.9M | ﹤0.01% |
401,700
-1,400
| -0.3% | -$7.78K |
2025 Q3
4 quarters
|
|
2050
PUT
Copart
CPRT
$29.8B
| $1.89M | ﹤0.01% |
69,400
-9,700
| -12% | -$291K |
2018 Q2
33 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.