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 | |
|---|---|---|---|---|---|---|
4651
PUT
Spire Global
SPIR
$408M
| $200K | ﹤0.01% |
18,500
+300
| +2% | +$3.1K |
|
4652
PUT
Vista Energy
VIST
$7.34B
| $200K | ﹤0.01% |
4,400
-7,700
| -64% | -$341K |
|
4653
Asana
ASAN
$1.96B
| $199K | ﹤0.01% |
14,279
-78,948
| -85% | -$1.13M |
|
|
GTY
4654
CALL
Getty Realty Corp
GTY
$2.16B
| $199K | ﹤0.01% |
7,500
-300
| -4% | -$8.15K |
|
|
UHT
4655
CALL
Universal Health Realty Income Trust
UHT
$621M
| $199K | ﹤0.01% |
5,100
+4,400
| +629% | +$161K |
|
|
TEM
4656
PUT
Tempus AI
TEM
$7.48B
| $199K | ﹤0.01% |
+5,700
| New | +$175K |
|
4657
Teucrium Corn Fund
CORN
$178M
| $198K | ﹤0.01% |
10,868
+3,984
| +58% | +$79.7K |
|
4658
CALL
Heartland Express
HTLD
$1.01B
| $198K | ﹤0.01% |
16,100
+15,800
| +5,267% | +$177K |
|
4659
CALL
Seres Therapeutics
MCRB
$45M
| $198K | ﹤0.01% |
13,675
+9,790
| +252% | +$163K |
|
4660
Ultragenyx Pharmaceutical
RARE
$2.46B
| $198K | ﹤0.01% |
4,835
+3,881
| +407% | +$166K |
|
4661
CALL
RXO
RXO
$3.68B
| $198K | ﹤0.01% |
7,600
-42,900
| -85% | -$892K |
|
4662
Brookfield Infrastructure Partners
BIP
$19.6B
| $197K | ﹤0.01% |
+7,207
| New | +$205K |
|
4663
iShares Russell 2000 Growth ETF
IWO
$14.1B
| $197K | ﹤0.01% |
+753
| New | +$195K |
|
|
HAPN
4664
Happen Inc
HAPN
$2.14B
| $197K | ﹤0.01% |
+23,300
| New | +$199K |
|
4665
Rentokil
RTO
$14.8B
| $197K | ﹤0.01% |
+6,677
| New | +$185K |
|
4666
ProShares Short Russell2000
RWM
$133M
| $197K | ﹤0.01% |
+9,502
| New | +$200K |
|
4667
PUT
Vanda Pharmaceuticals
VNDA
$304M
| $197K | ﹤0.01% |
35,000
+31,100
| +797% | +$161K |
|
4668
Coursera
COUR
$1.77B
| $196K | ﹤0.01% |
27,434
+10,134
| +59% | +$96.3K |
|
4669
PUT
DXC Technology
DXC
$1.91B
| $196K | ﹤0.01% |
10,300
+8,300
| +415% | +$156K |
|
|
EB
4670
DELISTED
Eventbrite
EB
| $196K | ﹤0.01% |
40,537
+34,804
| +607% | +$182K |
|
4671
PUT
Globant
GLOB
$1.65B
| $196K | ﹤0.01% |
1,100
+500
| +83% | +$88.1K |
|
4672
PUT
Champion Homes
SKY
$4.41B
| $196K | ﹤0.01% |
2,900
+500
| +21% | +$37.4K |
|
4673
AdvanSix
ASIX
$542M
| $195K | ﹤0.01% |
8,539
+5,233
| +158% | +$130K |
|
4674
Conagra Brands
CAG
$7.42B
| $194K | ﹤0.01% |
+6,827
| New | +$205K |
|
4675
C4 Therapeutics
CCCC
$389M
| $194K | ﹤0.01% |
42,101
-7,168
| -15% | -$42.8K |
|
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.