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 | |
|---|---|---|---|---|---|---|
6551
PUT
American Battery Technology Co
ABAT
$280M
| $30K | ﹤0.01% |
24,600
+24,000
| +4,000% | +$33.2K |
|
6552
Ambev
ABEV
$47.9B
| $30K | ﹤0.01% |
+15,005
| New | +$34.2K |
|
6553
PUT
Brink's
BCO
$5.01B
| $30K | ﹤0.01% |
300
| – | – |
|
6554
Bruker
BRKR
$9.4B
| $30K | ﹤0.01% |
+473
| New | +$35.6K |
|
6555
VanEck Oil Refiners ETF
CRAK
$209M
| $30K | ﹤0.01% |
857
+330
| +63% | +$12.2K |
|
|
CUK
6556
CALL
DELISTED
Carnival PLC
CUK
| $30K | ﹤0.01% |
1,800
-3,600
| -67% | -$50.4K |
|
6557
CALL
Essential Properties Realty Trust
EPRT
$6.92B
| $30K | ﹤0.01% |
+1,100
| New | +$29.3K |
|
6558
EXL Service
EXLS
$5.46B
| $30K | ﹤0.01% |
+987
| New | +$29.6K |
|
|
HSAI
6559
PUT
Hesai Group
HSAI
$2.57B
| $30K | ﹤0.01% |
7,200
-12,100
| -63% | -$57.6K |
|
|
HUYA
6560
PUT
Huya Inc
HUYA
$558M
| $30K | ﹤0.01% |
7,800
-324,600
| -98% | -$1.53M |
|
6561
CALL
loanDepot
LDI
$548M
| $30K | ﹤0.01% |
18,500
+16,100
| +671% | +$34.4K |
|
|
ORC
6562
CALL
Orchid Island Capital
ORC
$1.31B
| $30K | ﹤0.01% |
3,600
-26,300
| -88% | -$223K |
|
6563
CALL
Orion Group Holdings
ORN
$368M
| $30K | ﹤0.01% |
3,200
-100
| -3% | -$884 |
|
6564
PUT
Vaxcyte
PCVX
$7.65B
| $30K | ﹤0.01% |
400
-800
| -67% | -$54.5K |
|
6565
CALL
D-Wave Quantum Inc. Common Stock
QBTS
$5.99B
| $30K | ﹤0.01% |
26,600
-64,200
| -71% | -$90.5K |
|
6566
CALL
Rani Therapeutics
RANI
$94.8M
| $30K | ﹤0.01% |
8,000
+6,600
| +471% | +$34.2K |
|
6567
PUT
Sotera Health
SHC
$5B
| $30K | ﹤0.01% |
2,600
-11,200
| -81% | -$128K |
|
6568
SiriusPoint
SPNT
$3.03B
| $30K | ﹤0.01% |
2,475
+1,248
| +102% | +$15.6K |
|
6569
PUT
Texas Capital Bancshares
TCBI
$4.28B
| $30K | ﹤0.01% |
500
+300
| +150% | +$17.7K |
|
6570
Tennant Co
TNC
$1.44B
| $30K | ﹤0.01% |
310
-2,801
| -90% | -$302K |
|
6571
PUT
Wabash National
WNC
$504M
| $30K | ﹤0.01% |
1,400
-3,600
| -72% | -$84.8K |
|
6572
CALL
Arq
ARQ
$83.3M
| $30K | ﹤0.01% |
5,000
-7,000
| -58% | -$48.3K |
|
|
ZK
6573
PUT
DELISTED
Zeekr
ZK
| $30K | ﹤0.01% |
+1,600
| New | +$38.3K |
|
6574
CALL
Adtran
ADTN
$675M
| $29K | ﹤0.01% |
5,600
+300
| +6% | +$1.53K |
|
6575
CALL
Astec Industries
ASTE
$1.17B
| $29K | ﹤0.01% |
+1,000
| New | +$35.9K |
|
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.