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 | |
|---|---|---|---|---|---|---|
1701
CALL
Trupanion
TRUP
$1.05B
| $3.47M | ﹤0.01% |
118,100
+32,500
| +38% | +$861K |
|
|
ML
1702
PUT
DELISTED
MoneyLion Inc.
ML
| $3.47M | ﹤0.01% |
+47,200
| New | +$3.71M |
|
|
BPMC
1703
PUT
DELISTED
Blueprint Medicines
BPMC
| $3.47M | ﹤0.01% |
32,200
-5,900
| -15% | -$591K |
|
1704
PUT
Annaly Capital Management
NLY
$16.9B
| $3.47M | ﹤0.01% |
182,100
+15,000
| +9% | +$291K |
|
1705
PUT
Dutch Bros
BROS
$8.78B
| $3.47M | ﹤0.01% |
83,800
-25,100
| -23% | -$862K |
|
1706
CALL
Hartford Financial Services
HIG
$38.5B
| $3.47M | ﹤0.01% |
34,500
-4,200
| -11% | -$422K |
|
1707
PUT
AeroVironment
AVAV
$7.57B
| $3.46M | ﹤0.01% |
19,000
-28,000
| -60% | -$5.03M |
|
|
CIVI
1708
CALL
DELISTED
Civitas Resources
CIVI
| $3.46M | ﹤0.01% |
50,100
+22,000
| +78% | +$1.59M |
|
1709
PUT
Chord Energy
CHRD
$7.79B
| $3.45M | ﹤0.01% |
20,600
-5,800
| -22% | -$1.03M |
|
1710
PUT
The GEO Group
GEO
$4.13B
| $3.45M | ﹤0.01% |
240,100
-76,600
| -24% | -$1.08M |
|
1711
State Street SPDR Portfolio S&P 500 Growth ETF
SPYG
$50.7B
| $3.44M | ﹤0.01% |
42,908
+16,609
| +63% | +$1.24M |
|
1712
ZIM Integrated Shipping Services
ZIM
$3B
| $3.43M | ﹤0.01% |
154,687
+83,296
| +117% | +$1.35M |
|
1713
Hubbell
HUBB
$25.7B
| $3.42M | ﹤0.01% |
9,361
+9,266
| +9,754% | +$3.63M |
|
1714
CALL
Lattice Semiconductor
LSCC
$17.6B
| $3.42M | ﹤0.01% |
59,000
-2,500
| -4% | -$173K |
|
1715
MongoDB
MDB
$24B
| $3.42M | ﹤0.01% |
13,683
+9,365
| +217% | +$2.96M |
|
1716
CALL
Ollie's Bargain Outlet
OLLI
$4.01B
| $3.42M | ﹤0.01% |
34,800
+15,200
| +78% | +$1.21M |
|
1717
Li Auto
LI
$12.6B
| $3.41M | ﹤0.01% |
190,905
+9,857
| +5% | +$238K |
|
1718
PUT
Vestis
VSTS
$2.06B
| $3.41M | ﹤0.01% |
278,800
+277,300
| +18,487% | +$4.01M |
|
1719
PUT
NexGen Energy
NXE
$6.05B
| $3.4M | ﹤0.01% |
487,000
+331,400
| +213% | +$2.54M |
|
|
PR
1720
PUT
Permian Resources
PR
$17.9B
| $3.4M | ﹤0.01% |
210,500
-2,400
| -1% | -$39.8K |
|
1721
CALL
Wabtec
WAB
$51.1B
| $3.4M | ﹤0.01% |
21,500
-32,700
| -60% | -$5.22M |
|
1722
Nu Holdings
NU
$68.1B
| $3.39M | ﹤0.01% |
+263,081
| New | +$3.06M |
|
1723
CALL
Trimble
TRMB
$12.3B
| $3.39M | ﹤0.01% |
60,600
+50,500
| +500% | +$2.91M |
|
1724
PUT
Targa Resources
TRGP
$60.4B
| $3.39M | ﹤0.01% |
26,300
-63,400
| -71% | -$7.42M |
|
1725
Novavax
NVAX
$1.23B
| $3.38M | ﹤0.01% |
+267,431
| New | +$2.69M |
|
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.