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 | |
|---|---|---|---|---|---|---|
|
EVA
5201
CALL
DELISTED
Enviva Inc.
EVA
| $119K | ﹤0.01% |
278,600
-4,900
| -2% | -$2.46K |
|
5202
PUT
Atlanta Braves Holdings Series B
BATRK
$3.26B
| $118K | ﹤0.01% |
2,900
+2,300
| +383% | +$89.4K |
|
5203
PUT
Lazard
LAZ
$4.09B
| $118K | ﹤0.01% |
3,100
-3,400
| -52% | -$133K |
|
5204
PUT
Pembina Pipeline
PBA
$29.3B
| $118K | ﹤0.01% |
3,200
+2,000
| +167% | +$72.3K |
|
5205
PUT
Performance Food Group
PFGC
$18B
| $118K | ﹤0.01% |
+1,800
| New | +$125K |
|
5206
CALL
POSCO
PKX
$16.5B
| $118K | ﹤0.01% |
1,800
+400
| +29% | +$28.4K |
|
|
SLCA
5207
CALL
DELISTED
U.S. SILICA HOLDINGS, INC.
SLCA
| $118K | ﹤0.01% |
7,700
-114,200
| -94% | -$1.68M |
|
5208
CALL
ADC Therapeutics
ADCT
$141M
| $117K | ﹤0.01% |
37,200
+22,400
| +151% | +$89K |
|
5209
PUT
Cemex
CX
$17.2B
| $117K | ﹤0.01% |
18,400
+8,200
| +80% | +$62.8K |
|
5210
WisdomTree Emerging Markets SmallCap Dividend Fund
DGS
$1.69B
| $117K | ﹤0.01% |
+2,275
| New | +$117K |
|
5211
iShares MSCI Emerging Markets Min Vol Factor ETF
EEMV
$3.45B
| $117K | ﹤0.01% |
2,055
-2,999
| -59% | -$170K |
|
5212
PUT
Eagle Bancorp
EGBN
$838M
| $117K | ﹤0.01% |
+6,200
| New | +$121K |
|
5213
Essex Property Trust
ESS
$18.1B
| $117K | ﹤0.01% |
431
-2,451
| -85% | -$629K |
|
5214
MediaAlpha
MAX
$732M
| $117K | ﹤0.01% |
8,890
+7,438
| +512% | +$137K |
|
5215
PUT
Northeast Community Bancorp
NECB
$366M
| $117K | ﹤0.01% |
6,600
-9,000
| -58% | -$148K |
|
5216
CALL
SkinHealth Systems
SKIN
$87.6M
| $117K | ﹤0.01% |
61,300
-52,000
| -46% | -$146K |
|
5217
CALL
Thomson Reuters
TRI
$43.1B
| $117K | ﹤0.01% |
689
+295
| +75% | +$48.9K |
|
5218
Marriott Vacations Worldwide
VAC
$3.35B
| $117K | ﹤0.01% |
+1,350
| New | +$128K |
|
5219
PUT
Astrana Health
ASTH
$1.82B
| $117K | ﹤0.01% |
2,900
-6,700
| -70% | -$266K |
|
|
B
5220
DELISTED
Barnes Group Inc.
B
| $117K | ﹤0.01% |
2,837
+2,686
| +1,779% | +$101K |
|
|
AGR
5221
DELISTED
Avangrid, Inc.
AGR
| $117K | ﹤0.01% |
3,309
+2,159
| +188% | +$77.9K |
|
5222
PUT
Adient
ADNT
$1.72B
| $116K | ﹤0.01% |
4,700
+2,800
| +147% | +$79.5K |
|
5223
CALL
AudioEye
AEYE
$72.8M
| $116K | ﹤0.01% |
6,600
-4,700
| -42% | -$83.1K |
|
5224
PUT
Ginkgo Bioworks
DNA
$528M
| $116K | ﹤0.01% |
8,715
-4,405
| -34% | -$131K |
|
|
GPMT
5225
CALL
Granite Point Mortgage Trust
GPMT
$64.7M
| $116K | ﹤0.01% |
39,200
+22,700
| +138% | +$84K |
|
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.