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 | |
|---|---|---|---|---|---|---|
3776
CALL
Clean Harbors
CLH
$16.5B
| $384K | ﹤0.01% |
3,500
+1,800
| +106% | +$193K |
|
3777
PUT
Murphy USA
MUSA
$11.2B
| $384K | ﹤0.01% |
1,400
-5,400
| -79% | -$1.51M |
|
3778
CALL
Navient
NAVI
$789M
| $384K | ﹤0.01% |
26,200
+3,400
| +15% | +$51.9K |
|
|
TRVG
3779
PUT
trivago
TRVG
$373M
| $384K | ﹤0.01% |
66,220
+2,540
| +4% | +$19.1K |
|
|
CLVS
3780
CALL
DELISTED
Clovis Oncology, Inc.
CLVS
| $384K | ﹤0.01% |
323,200
-118,300
| -27% | -$184K |
|
3781
Arch Capital
ACGL
$34.3B
| $383K | ﹤0.01% |
8,421
+8,397
| +34,988% | +$379K |
|
3782
CALL
Ezcorp Inc
EZPW
$1.83B
| $383K | ﹤0.01% |
+49,800
| New | +$413K |
|
|
FATH
3783
CALL
DELISTED
Fathom Digital Manufacturing Corporation
FATH
| $383K | ﹤0.01% |
9,445
+3,245
| +52% | +$223K |
|
3784
CALL
Arvinas
ARVN
$518M
| $382K | ﹤0.01% |
8,600
+2,000
| +30% | +$97.1K |
|
3785
PUT
NeoGenomics
NEO
$1.96B
| $381K | ﹤0.01% |
44,300
+28,900
| +188% | +$287K |
|
|
FLG
3786
PUT
Flagstar Bank National Association
FLG
$5.93B
| $381K | ﹤0.01% |
14,900
-1,300
| -8% | -$38.2K |
|
|
TMPO
3787
CALL
DELISTED
Tempo Automation Holdings, Inc. Common Stock
TMPO
| $381K | ﹤0.01% |
37,200
-9,200
| -20% | -$93.9K |
|
3788
CALL
Century Aluminum
CENX
$4.43B
| $380K | ﹤0.01% |
72,000
-74,900
| -51% | -$569K |
|
3789
CALL
Citius Pharmaceuticals
CTXR
$15.6M
| $380K | ﹤0.01% |
12,584
+5,316
| +73% | +$146K |
|
3790
CALL
Denali Therapeutics
DNLI
$3.65B
| $380K | ﹤0.01% |
12,400
+5,700
| +85% | +$185K |
|
3791
PUT
Northern Oil and Gas
NOG
$2.3B
| $380K | ﹤0.01% |
13,900
-46,100
| -77% | -$1.3M |
|
|
EGLE
3792
PUT
DELISTED
Eagle Bulk Shipping Inc.
EGLE
| $379K | ﹤0.01% |
8,800
+6,100
| +226% | +$289K |
|
3793
CALL
Progyny
PGNY
$2.44B
| $378K | ﹤0.01% |
10,200
-17,700
| -63% | -$663K |
|
3794
VanEck Steel ETF
SLX
$169M
| $378K | ﹤0.01% |
+7,924
| New | +$411K |
|
3795
PUT
Ameriprise Financial
AMP
$48.3B
| $377K | ﹤0.01% |
1,500
-1,500
| -50% | -$395K |
|
3796
iShares MSCI Chile ETF
ECH
$1.01B
| $377K | ﹤0.01% |
15,726
+7,694
| +96% | +$200K |
|
|
KYNB
3797
PUT
Kyntra Bio
KYNB
$27.2M
| $377K | ﹤0.01% |
1,160
+700
| +152% | +$225K |
|
|
RC
3798
PUT
Ready Capital
RC
$258M
| $377K | ﹤0.01% |
37,200
-45,800
| -55% | -$593K |
|
3799
SLM Corp
SLM
$4.89B
| $377K | ﹤0.01% |
27,013
+9,670
| +56% | +$150K |
|
|
LICY
3800
CALL
DELISTED
Li-Cycle Holdings Corp.
LICY
| $377K | ﹤0.01% |
8,863
+613
| +7% | +$33.3K |
|
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.