Simplex Trading Portfolio holdings
Simplex Trading, founded in 2004 and headquartered in Chicago, Illinois, is a technology-driven proprietary trading firm specializing in market-making and liquidity provision, primarily in U.S. equity options and futures options. Leveraging advanced proprietary software and data-driven analysis, the firm optimizes trading strategies and develops innovative solutions to capitalize on financial market opportunities, maintaining a competitive edge through automation and a collaborative team of technologists and traders. With a workforce exceeding 300 and led by CEO Erik Swanson since 2014, Simplex operates with a low-ego, high-intelligence culture, focusing on minimal bureaucracy and rapid execution, while also making strategic venture capital investments in fintech startups. Recognized as a top workplace in Chicago by Built In’s 2025 awards, Simplex continues to evolve, blending cutting-edge technology with a commitment to market efficiency and growth.
Top Buys
| Rank | Stock | Value |
|---|---|---|
| 1 |
NVIDIA
NVDA
|
+$93M |
| 2 |
Citigroup
C
|
+$74.8M |
| 3 |
Pinduoduo
PDD
|
+$50.7M |
| 4 |
Intel
INTC
|
+$47.1M |
| 5 |
Broadcom
AVGO
|
+$46.2M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
State Street Energy Select Sector SPDR ETF
XLE
|
+$94.5M |
| 2 |
Pfizer
PFE
|
+$66.4M |
| 3 |
Boeing
BA
|
+$61.6M |
| 4 |
PayPal
PYPL
|
+$42.2M |
| 5 |
GE Aerospace
GE
|
+$42M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Technology | 0.53% |
| 2 | Consumer Discretionary | 0.29% |
| 3 | Healthcare | 0.21% |
| 4 | Financials | 0.2% |
| 5 | Materials | 0.12% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
4126
PUT
Emcor
EME
$31.4B
| $328K | ﹤0.01% |
900
-600
| -40% | -$221K |
|
4127
CALL
Humacyte
HUMA
$170M
| $328K | ﹤0.01% |
68,400
+53,600
| +362% | +$279K |
|
|
IPG
4128
CALL
DELISTED
Interpublic Group of Companies
IPG
| $328K | ﹤0.01% |
11,300
-26,500
| -70% | -$817K |
|
4129
CALL
NETGEAR
NTGR
$663M
| $328K | ﹤0.01% |
21,500
-4,300
| -17% | -$60.1K |
|
4130
PUT
Skywest
SKYW
$4.51B
| $328K | ﹤0.01% |
4,000
-8,700
| -69% | -$649K |
|
4131
PUT
TMC The Metals Company
TMC
$1.56B
| $328K | ﹤0.01% |
243,200
+113,200
| +87% | +$173K |
|
4132
CALL
Popular Inc
BPOP
$11.1B
| $327K | ﹤0.01% |
3,700
-300
| -8% | -$26.1K |
|
4133
PUT
TriplePoint Venture Growth BDC
TPVG
$185M
| $327K | ﹤0.01% |
40,800
+29,100
| +249% | +$267K |
|
4134
PUT
Amplify Energy
AMPY
$152M
| $326K | ﹤0.01% |
48,200
-16,800
| -26% | -$111K |
|
4135
PUT
Equinox Gold
EQX
$7.22B
| $326K | ﹤0.01% |
62,500
+37,000
| +145% | +$206K |
|
4136
PUT
American Century Diversified Corporate Bond ETF
KORP
$873M
| $326K | ﹤0.01% |
4,500
+3,900
| +650% | +$178K |
|
4137
WisdomTree
WT
$2.97B
| $326K | ﹤0.01% |
32,975
+20,106
| +156% | +$189K |
|
|
BAND
4138
PUT
Bandwidth Inc
BAND
$1.67B
| $325K | ﹤0.01% |
19,300
-4,000
| -17% | -$75.5K |
|
4139
PUT
Brighthouse Financial
BHF
$3.66B
| $325K | ﹤0.01% |
7,500
+3,400
| +83% | +$157K |
|
4140
CALL
Bentley Systems
BSY
$10.9B
| $325K | ﹤0.01% |
6,600
-20,400
| -76% | -$1.06M |
|
4141
CALL
Carlisle Companies
CSL
$14.1B
| $324K | ﹤0.01% |
800
-19,100
| -96% | -$7.7M |
|
4142
PUT
Sonoco
SON
$5.99B
| $324K | ﹤0.01% |
6,400
+3,700
| +137% | +$214K |
|
4143
PUT
Booz Allen Hamilton
BAH
$8.8B
| $323K | ﹤0.01% |
2,100
-10,100
| -83% | -$1.51M |
|
|
EXK
4144
CALL
Endeavour Silver
EXK
$2.29B
| $323K | ﹤0.01% |
91,800
+88,300
| +2,523% | +$287K |
|
|
CNH
4145
CNH Industrial
CNH
$14.2B
| $323K | ﹤0.01% |
+31,893
| New | +$361K |
|
4146
CALL
IAMGOLD
IAG
$8.24B
| $322K | ﹤0.01% |
85,900
+31,900
| +59% | +$122K |
|
4147
Direxion Daily 20+ Year Treasury Bear 3X ETF
TMV
$174M
| $322K | ﹤0.01% |
8,984
-19,805
| -69% | -$737K |
|
4148
PUT
Destination XL Group
DXLG
$34.3M
| $321K | ﹤0.01% |
88,400
+87,900
| +17,580% | +$302K |
|
4149
Palomar
PLMR
$3.79B
| $321K | ﹤0.01% |
3,966
+728
| +22% | +$59.3K |
|
4150
L3Harris
LHX
$56.9B
| $320K | ﹤0.01% |
+1,428
| New | +$309K |
|
Similar funds
Simplex Trading's Q2 2024 Portfolio in Review
As of Q2 2024, Simplex Trading held 10,213 positions worth $162B, down 6.5% from $173B the previous quarter. Its ten largest holdings account for 50% of the portfolio.
Simplex Trading withdrew a net $19.2B in Q2 2024, closing 1,431 positions and reducing 4,061 holdings. Its most notable exit was Boeing, an estimated $61.6M position sold in full.
By sector, the portfolio is most concentrated in Technology at 0.53% of assets, up from 0.38% a quarter earlier, followed by Consumer Discretionary and Healthcare.
Against the trend, Simplex Trading opened a new position in Citigroup worth $77M.
- Simplex Trading's largest Q2 2024 buy was Citigroup: 1,213,247 shares worth $77M.
- Simplex Trading added most to NVIDIA in Q2 2024, an estimated $93M increase.
- Simplex Trading's biggest Q2 2024 reduction was State Street Energy Select Sector SPDR ETF, cutting an estimated $94.5M.
- Simplex Trading fully exited Boeing in Q2 2024, selling an estimated $61.6M.
- Simplex Trading's ten largest holdings make up 50% of its $162B portfolio in Q2 2024.
- Simplex Trading opened 1,358 new positions and closed 1,431 in Q2 2024.
- Simplex Trading's portfolio value fell 6.5% quarter-over-quarter to $162B.
Based on Simplex Trading's 13F filing for Q2 2024, filed 25 Jul 2024.