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 | |
|---|---|---|---|---|---|---|
1351
PUT
Hyatt Hotels
H
$17.6B
| $5.79M | ﹤0.01% |
38,100
+12,400
| +48% | +$1.86M |
|
1352
CALL
American Conservative Values ETF
ACVF
$149M
| $5.78M | ﹤0.01% |
42,500
-20,800
| -33% | -$829K |
|
1353
PUT
Iron Mountain
IRM
$38.2B
| $5.77M | ﹤0.01% |
64,400
+7,800
| +14% | +$631K |
|
1354
CALL
Freshpet
FRPT
$2.83B
| $5.76M | ﹤0.01% |
44,500
-1,900
| -4% | -$228K |
|
|
PPL
1355
CALL
PPL Corp
PPL
$27.3B
| $5.74M | ﹤0.01% |
207,600
+164,100
| +377% | +$4.6M |
|
1356
CALL
Universal Display
OLED
$3.71B
| $5.74M | ﹤0.01% |
27,300
+4,300
| +19% | +$756K |
|
1357
PUT
Unilever
UL
$131B
| $5.72M | ﹤0.01% |
92,444
-5,689
| -6% | -$336K |
|
1358
CALL
Hilton Worldwide
HLT
$74B
| $5.72M | ﹤0.01% |
26,200
-45,200
| -63% | -$9.28M |
|
1359
Dow Inc
DOW
$21.6B
| $5.71M | ﹤0.01% |
+107,630
| New | +$6.15M |
|
1360
CALL
Lucid Motors
LCID
$2.46B
| $5.7M | ﹤0.01% |
218,430
-8,650
| -4% | -$231K |
|
1361
PUT
M&T Bank
MTB
$36.2B
| $5.69M | ﹤0.01% |
37,600
-47,400
| -56% | -$6.92M |
|
1362
Expedia Group
EXPE
$31.2B
| $5.68M | ﹤0.01% |
+45,075
| New | +$5.56M |
|
1363
CALL
Invesco CurrencyShares Japanese Yen Trust
FXY
$423M
| $5.67M | ﹤0.01% |
98,600
-3,600
| -4% | -$214K |
|
1364
PUT
Cytokinetics
CYTK
$11B
| $5.66M | ﹤0.01% |
104,500
-522,500
| -83% | -$31.5M |
|
|
AGEN
1365
CALL
Agenus
AGEN
$249M
| $5.64M | ﹤0.01% |
336,900
+321,230
| +2,050% | +$3.88M |
|
1366
CALL
Paycom
PAYC
$6.78B
| $5.63M | ﹤0.01% |
39,400
-39,100
| -50% | -$6.7M |
|
1367
PUT
American Water Works
AWK
$26.3B
| $5.63M | ﹤0.01% |
43,600
+2,400
| +6% | +$303K |
|
|
DFS
1368
PUT
DELISTED
Discover Financial Services
DFS
| $5.62M | ﹤0.01% |
43,000
-28,800
| -40% | -$3.59M |
|
1369
PUT
VeriSign
VRSN
$25.5B
| $5.62M | ﹤0.01% |
31,600
+500
| +2% | +$89.1K |
|
1370
CALL
FIVE9
FIVN
$1.77B
| $5.59M | ﹤0.01% |
126,800
-12,900
| -9% | -$670K |
|
1371
CALL
Citizens Financial Group
CFG
$30.4B
| $5.58M | ﹤0.01% |
154,800
-21,600
| -12% | -$753K |
|
1372
CALL
Invesco DB US Dollar Index Bullish Fund
UUP
$434M
| $5.57M | ﹤0.01% |
200,400
+73,700
| +58% | +$2.12M |
|
1373
PUT
Diageo
DEO
$46.2B
| $5.56M | ﹤0.01% |
44,100
+2,800
| +7% | +$386K |
|
1374
CALL
Navios Maritime Partners
NMM
$2.25B
| $5.55M | ﹤0.01% |
108,800
-42,500
| -28% | -$1.97M |
|
1375
PUT
New Fortress Energy
NFE
$101M
| $5.54M | ﹤0.01% |
252,300
+57,600
| +30% | +$1.49M |
|
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.