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 |
Microsoft
MSFT
|
+$114M |
| 2 |
NVIDIA
NVDA
|
+$85.9M |
| 3 |
Citigroup
C
|
+$61.5M |
| 4 |
Berkshire Hathaway Class B
BRK.B
|
+$45.5M |
| 5 |
Pfizer
PFE
|
+$41.6M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
Apple
AAPL
|
+$467M |
| 2 |
Vanguard S&P 500 ETF
VOO
|
+$71.2M |
| 3 |
Meta Platforms (Facebook)
META
|
+$47.6M |
| 4 |
Intel
INTC
|
+$41.9M |
| 5 |
TSMC
TSM
|
+$35.9M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Technology | 0.51% |
| 2 | Financials | 0.35% |
| 3 | Consumer Discretionary | 0.3% |
| 4 | Healthcare | 0.25% |
| 5 | Industrials | 0.18% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
|
TWOU
3626
CALL
DELISTED
2U Inc
TWOU
| $434K | ﹤0.01% |
2,317
-1,033
| -31% | -$269K |
|
|
FRG
3627
DELISTED
Franchise Group, Inc.
FRG
| $434K | ﹤0.01% |
+17,901
| New | +$588K |
|
3628
Acadia Realty Trust
AKR
$3.08B
| $433K | ﹤0.01% |
+34,374
| New | +$551K |
|
3629
CALL
Medifast
MED
$109M
| $433K | ﹤0.01% |
4,000
+1,700
| +74% | +$244K |
|
3630
CALL
Mettler-Toledo International
MTD
$28.7B
| $433K | ﹤0.01% |
400
-3,600
| -90% | -$4.47M |
|
3631
CALL
Vaalco Energy
EGY
$571M
| $432K | ﹤0.01% |
99,200
+800
| +0.8% | +$4.11K |
|
3632
PUT
Energy Vault
NRGV
$522M
| $432K | ﹤0.01% |
82,000
+31,000
| +61% | +$168K |
|
3633
PUT
Vanguard Dividend Appreciation ETF
VIG
$111B
| $432K | ﹤0.01% |
3,200
-2,900
| -48% | -$432K |
|
3634
CALL
Westrock Coffee
WEST
$792M
| $432K | ﹤0.01% |
+41,900
| New | +$445K |
|
3635
Kosmos Energy
KOS
$1.6B
| $431K | ﹤0.01% |
83,436
+16,336
| +24% | +$99K |
|
|
NLSN
3636
DELISTED
Nielsen Holdings plc
NLSN
| $431K | ﹤0.01% |
+15,564
| New | +$406K |
|
|
ARR
3637
Armour Residential REIT
ARR
$2.33B
| $430K | ﹤0.01% |
17,667
+14,555
| +468% | +$510K |
|
3638
Marqeta
MQ
$1.83B
| $430K | ﹤0.01% |
15,104
+4,258
| +39% | +$142K |
|
3639
PUT
Planet Labs
PL
$7.28B
| $430K | ﹤0.01% |
79,300
+16,600
| +26% | +$91.7K |
|
|
AAWW
3640
CALL
DELISTED
Atlas Air Worldwide Holdings, Inc.
AAWW
| $430K | ﹤0.01% |
4,500
-4,700
| -51% | -$415K |
|
3641
Cenovus Energy
CVE
$55.6B
| $429K | ﹤0.01% |
27,960
+537
| +2% | +$9.54K |
|
|
CCRN
3642
PUT
DELISTED
Cross Country Healthcare
CCRN
| $428K | ﹤0.01% |
15,100
+14,700
| +3,675% | +$378K |
|
3643
CALL
InfraCap MLP ETF
AMZA
$473M
| $427K | ﹤0.01% |
15,600
+7,600
| +95% | +$229K |
|
3644
PUT
Atkore
ATKR
$2.46B
| $427K | ﹤0.01% |
5,500
+2,300
| +72% | +$199K |
|
3645
PUT
Sprouts Farmers Market
SFM
$8.15B
| $427K | ﹤0.01% |
15,400
-10,800
| -41% | -$307K |
|
3646
CALL
CryoPort
CYRX
$758M
| $426K | ﹤0.01% |
17,500
-9,300
| -35% | -$320K |
|
3647
CALL
Grocery Outlet
GO
$903M
| $426K | ﹤0.01% |
12,800
-7,700
| -38% | -$313K |
|
3648
CALL
OGE Energy
OGE
$9.79B
| $426K | ﹤0.01% |
11,700
-2,100
| -15% | -$84.7K |
|
|
RBOT
3649
CALL
DELISTED
Vicarious Surgical
RBOT
| $426K | ﹤0.01% |
4,240
-1,583
| -27% | -$184K |
|
3650
Aegon
AEG
$14B
| $425K | ﹤0.01% |
+107,482
| New | +$468K |
|
Similar funds
Simplex Trading's Q3 2022 Portfolio in Review
As of Q3 2022, Simplex Trading held 11,570 positions worth $88.5B, down 6% from $94.1B the previous quarter. Its ten largest holdings account for 38% of the portfolio.
Simplex Trading's Q3 2022 filing shows 1,564 new, 4,281 increased, 3,851 reduced and 1,575 closed positions. Its largest new stake was Microsoft: 432,062 shares worth $101M. The largest sale was Apple, an estimated $467M.
By sector, the portfolio is most concentrated in Technology at 0.51% of assets, down from 0.84% a quarter earlier, followed by Financials and Consumer Discretionary.
- Simplex Trading's largest Q3 2022 buy was Microsoft: 432,062 shares worth $101M.
- Simplex Trading added most to NVIDIA in Q3 2022, an estimated $85.9M increase.
- Simplex Trading's biggest Q3 2022 reduction was Apple, cutting an estimated $467M.
- Simplex Trading fully exited iShares Core S&P 500 ETF in Q3 2022, selling an estimated $34.3M.
- Simplex Trading's ten largest holdings make up 38% of its $88.5B portfolio in Q3 2022.
- Simplex Trading opened 1,564 new positions and closed 1,575 in Q3 2022.
- Simplex Trading's portfolio value fell 6% quarter-over-quarter to $88.5B.
Based on Simplex Trading's 13F filing for Q3 2022, filed 4 Nov 2022.