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 | |
|---|---|---|---|---|---|---|---|
1451
CALL
Voyager Technologies
VOYG
$1.84B
| $3.49M | ﹤0.01% |
115,500
+86,100
| +293% | +$2.87M |
2025 Q2
5 quarters
|
|
1452
PUT
Fluor
FLR
$6.49B
| $3.49M | ﹤0.01% |
72,800
-63,700
| -47% | -$3.32M |
2014 Q4
47 quarters
|
|
1453
PUT
SoundHound AI
SOUN
$1.91B
| $3.48M | ﹤0.01% |
578,500
+310,300
| +116% | +$2.05M |
2022 Q2
17 quarters
|
|
1454
CALL
Globalstar
GSAT
$11.2B
| $3.48M | ﹤0.01% |
42,000
-1,700
| -4% | -$139K |
2018 Q2
33 quarters
|
|
1455
PUT
Viavi Solutions
VIAV
$8.12B
| $3.48M | ﹤0.01% |
83,000
+26,200
| +46% | +$1.02M |
2024 Q3
8 quarters
|
|
1456
CALL
Hormel Foods
HRL
$12.1B
| $3.47M | ﹤0.01% |
174,000
+106,600
| +158% | +$2.49M |
2015 Q3
44 quarters
|
|
1457
CALL
Equinor
EQNR
$97.8B
| $3.47M | ﹤0.01% |
83,400
-114,800
| -58% | -$4.63M |
2015 Q4
43 quarters
|
|
1458
CALL
Innodata
INOD
$1.31B
| $3.47M | ﹤0.01% |
52,700
+10,400
| +25% | +$645K |
2020 Q3
24 quarters
|
|
1459
The Kraft Heinz Company
KHC
$28.7B
| $3.47M | ﹤0.01% |
152,517
+32,039
| +27% | +$806K |
2026 Q2
1 quarter
|
|
1460
PUT
Nutrien
NTR
$34B
| $3.46M | ﹤0.01% |
49,300
+20,900
| +74% | +$1.49M |
2018 Q1
34 quarters
|
|
1461
CALL
Goldman Sachs Innovate Equity ETF
GINN
$177M
| $3.46M | ﹤0.01% |
60,000
+31,500
| +111% | +$2.54M |
2024 Q4
7 quarters
|
|
1462
CALL
Western Midstream Partners
WES
$17.1B
| $3.46M | ﹤0.01% |
78,000
+33,700
| +76% | +$1.59M |
2026 Q1
2 quarters
|
|
1463
PUT
PPL Corp
PPL
$26.6B
| $3.46M | ﹤0.01% |
105,200
+56,100
| +114% | +$1.96M |
2014 Q4
47 quarters
|
|
1464
PUT
Cognizant
CTSH
$28.8B
| $3.46M | ﹤0.01% |
60,200
-60,100
| -50% | -$3.3M |
2026 Q1
2 quarters
|
|
1465
CALL
Brookfield
BN
$93.9B
| $3.46M | ﹤0.01% |
94,800
-2,700
| -3% | -$111K |
2023 Q1
14 quarters
|
|
|
HONA
1466
CALL
Honeywell Aerospace
HONA
$53.7B
| $3.46M | ﹤0.01% |
+22,300
| New | +$4.06M |
2026 Q3
0 quarters
|
|
1467
CALL
Firefly Aerospace
FLY
$4.45B
| $3.45M | ﹤0.01% |
149,100
-60,200
| -29% | -$1.37M |
2025 Q3
4 quarters
|
|
1468
CALL
CDW
CDW
$21.6B
| $3.45M | ﹤0.01% |
26,900
+14,300
| +113% | +$2.02M |
2018 Q1
34 quarters
|
|
1469
PUT
Golar LNG
GLNG
$4.37B
| $3.45M | ﹤0.01% |
72,500
+55,500
| +326% | +$2.81M |
2014 Q4
47 quarters
|
|
1470
PUT
Starwood Property Trust
STWD
$4.29B
| $3.44M | ﹤0.01% |
255,100
+97,000
| +61% | +$1.55M |
2018 Q2
33 quarters
|
|
1471
PUT
Duke Energy
DUK
$100B
| $3.44M | ﹤0.01% |
30,200
-47,100
| -61% | -$5.77M |
2014 Q4
47 quarters
|
|
1472
CALL
PBF Energy
PBF
$8.27B
| $3.44M | ﹤0.01% |
44,700
+27,300
| +157% | +$1.85M |
2021 Q2
21 quarters
|
|
1473
CALL
Silicon Laboratories
SLAB
$7.39B
| $3.43M | ﹤0.01% |
15,500
+1,000
| +7% | +$219K |
2026 Q1
2 quarters
|
|
1474
PUT
YieldMax BABA Option Income Strategy ETF
BABO
$12M
| $3.43M | ﹤0.01% |
163,000
+99,700
| +158% | +$794K |
2024 Q4
7 quarters
|
|
1475
CALL
Alnylam Pharmaceuticals
ALNY
$21.4B
| $3.43M | ﹤0.01% |
13,900
+2,300
| +20% | +$585K |
2014 Q4
47 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.