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
|
+$53.9M |
| 2 |
iShares 20+ Year Treasury Bond ETF
TLT
|
+$52.9M |
| 3 |
NVIDIA
NVDA
|
+$47.1M |
| 4 |
PayPal
PYPL
|
+$41.7M |
| 5 |
Alphabet (Google) Class C
GOOG
|
+$28.4M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
Apple
AAPL
|
+$51.4M |
| 2 |
Walmart Inc
WMT
|
+$46.4M |
| 3 |
VanEck Oil Services ETF
OIH
|
+$34.2M |
| 4 |
Adobe
ADBE
|
+$33.5M |
| 5 |
Starbucks
SBUX
|
+$26.8M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Technology | 0.41% |
| 2 | Healthcare | 0.21% |
| 3 | Consumer Discretionary | 0.21% |
| 4 | Communication Services | 0.2% |
| 5 | Financials | 0.15% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
|
LGO
5551
Largo
LGO
$59.8M
| $65K | ﹤0.01% |
15,236
+14,914
| +4,632% | +$66.7K |
|
5552
PUT
Monro
MNRO
$383M
| $65K | ﹤0.01% |
1,600
+1,200
| +300% | +$54.1K |
|
5553
PUT
NETGEAR
NTGR
$648M
| $65K | ﹤0.01% |
4,600
-37,200
| -89% | -$562K |
|
5554
Sally Beauty Holdings
SBH
$1.43B
| $65K | ﹤0.01% |
5,282
-814
| -13% | -$10.3K |
|
|
SF
5555
PUT
Stifel
SF
$12.6B
| $65K | ﹤0.01% |
1,650
-4,800
| -74% | -$187K |
|
5556
CALL
TD Synnex
SNX
$20.4B
| $65K | ﹤0.01% |
700
-600
| -46% | -$55K |
|
|
5557
PUT
TD Synnex
SNX
$20.4B
| $65K | ﹤0.01% |
700
| – | – |
|
|
TVRD
5558
Tvardi Therapeutics
TVRD
$19.7M
| $65K | ﹤0.01% |
644
+567
| +736% | +$78.1K |
|
|
AMJ
5559
DELISTED
JP Morgan Alerian MLP Index ETN 5/24/24
AMJ
| $65K | ﹤0.01% |
+2,854
| New | +$64.2K |
|
|
XBTF
5560
CALL
DELISTED
VanEck Bitcoin Strategy ETF
XBTF
| $65K | ﹤0.01% |
2,200
+1,500
| +214% | +$41.8K |
|
|
XM
5561
CALL
DELISTED
Qualtrics International Inc. Class A Common Stock
XM
| $65K | ﹤0.01% |
75,900
-259,800
| -77% | -$4.67M |
|
5562
CALL
Compass Minerals
CMP
$1.23B
| $64K | ﹤0.01% |
1,900
-500
| -21% | -$16.6K |
|
5563
Invesco DB Agriculture Fund
DBA
$1.23B
| $64K | ﹤0.01% |
3,054
-21,677
| -88% | -$455K |
|
5564
PUT
F&G Annuities & Life
FG
$3.79B
| $64K | ﹤0.01% |
2,600
-300
| -10% | -$5.88K |
|
5565
PUT
iShares S&P GSCI Commodity-Indexed Trust
GSG
$998M
| $64K | ﹤0.01% |
3,300
-12,700
| -79% | -$250K |
|
5566
PUT
IDEX
IEX
$17B
| $64K | ﹤0.01% |
300
+200
| +200% | +$42K |
|
|
JFIN
5567
CALL
Jiayin Group
JFIN
$113M
| $64K | ﹤0.01% |
+12,200
| New | +$62.8K |
|
5568
CALL
Malibu Boats
MBUU
$541M
| $64K | ﹤0.01% |
1,100
+500
| +83% | +$28.1K |
|
5569
Marcus Corp
MCS
$894M
| $64K | ﹤0.01% |
+4,354
| New | +$70.4K |
|
5570
CALL
Medallion Financial
MFIN
$229M
| $64K | ﹤0.01% |
8,200
+4,900
| +148% | +$33.6K |
|
5571
CALL
MakeMyTrip
MMYT
$5.36B
| $64K | ﹤0.01% |
2,400
+800
| +50% | +$20.5K |
|
5572
CALL
Global X MSCI Norway ETF
NORW
$88M
| $64K | ﹤0.01% |
4,200
+1,200
| +40% | +$28.9K |
|
|
OLO
5573
PUT
DELISTED
Olo Inc
OLO
| $64K | ﹤0.01% |
10,000
+7,900
| +376% | +$56.9K |
|
5574
Unity
U
$13.8B
| $64K | ﹤0.01% |
1,494
-114,828
| -99% | -$3.68M |
|
5575
CALL
Vicor
VICR
$9.56B
| $64K | ﹤0.01% |
1,200
-400
| -25% | -$19.7K |
|
Similar funds
Simplex Trading's Q2 2023 Portfolio in Review
As of Q2 2023, Simplex Trading held 10,535 positions worth $122B, up 6.9% from $114B the previous quarter. Its ten largest holdings account for 43% of the portfolio.
Simplex Trading's Q2 2023 filing shows 1,474 new, 3,350 increased, 3,913 reduced and 1,517 closed positions. Its largest new stake was Microsoft: 171,935 shares worth $58.5M. The largest sale was Apple, an estimated $51.4M.
By sector, the portfolio is most concentrated in Technology at 0.41% of assets, down from 0.42% a quarter earlier, followed by Healthcare and Consumer Discretionary.
- Simplex Trading's largest Q2 2023 buy was Microsoft: 171,935 shares worth $58.5M.
- Simplex Trading added most to iShares 20+ Year Treasury Bond ETF in Q2 2023, an estimated $52.9M increase.
- Simplex Trading's biggest Q2 2023 reduction was Adobe, cutting an estimated $33.5M.
- Simplex Trading fully exited Apple in Q2 2023, selling an estimated $51.4M.
- Simplex Trading's ten largest holdings make up 43% of its $122B portfolio in Q2 2023.
- Simplex Trading opened 1,474 new positions and closed 1,517 in Q2 2023.
- Simplex Trading's portfolio value rose 6.9% quarter-over-quarter to $122B.
Based on Simplex Trading's 13F filing for Q2 2023, filed 4 Aug 2023.