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 | |
|---|---|---|---|---|---|---|
|
HDSN
8051
PUT
Hudson Technologies
HDSN
$246M
| $12K | ﹤0.01% |
1,700
-2,400
| -59% | -$20.2K |
|
8052
Hexcel
HXL
$7.97B
| $12K | ﹤0.01% |
+241
| New | +$14K |
|
8053
PUT
Integra LifeSciences
IART
$1.28B
| $12K | ﹤0.01% |
300
-6,600
| -96% | -$338K |
|
8054
Intellicheck
IDN
$75.1M
| $12K | ﹤0.01% |
5,093
+3,316
| +187% | +$8.53K |
|
8055
PUT
Integer Holdings
ITGR
$3.39B
| $12K | ﹤0.01% |
200
-11,800
| -98% | -$794K |
|
8056
PUT
Itron
ITRI
$4.54B
| $12K | ﹤0.01% |
300
-2,800
| -90% | -$139K |
|
8057
Janus Henderson AAA CLO ETF
JAAA
$29.1B
| $12K | ﹤0.01% |
259
-123
| -32% | -$6.05K |
|
8058
CALL
Kaiser Aluminum
KALU
$2.48B
| $12K | ﹤0.01% |
200
-100
| -33% | -$7.35K |
|
8059
PUT
Kilroy Realty
KRC
$4.59B
| $12K | ﹤0.01% |
300
-100
| -25% | -$5.04K |
|
8060
KraneShares Hang Seng TECH Index ETF
KTEC
$59.3M
| $12K | ﹤0.01% |
+1,170
| New | +$15.2K |
|
8061
PUT
Liberty Latin America Class C
LILAK
$1.69B
| $12K | ﹤0.01% |
2,310
-2,860
| -55% | -$18.4K |
|
8062
PUT
Lindblad Expeditions
LIND
$1.95B
| $12K | ﹤0.01% |
1,900
-28,700
| -94% | -$250K |
|
8063
CALL
Live Oak Bancshares
LOB
$1.98B
| $12K | ﹤0.01% |
400
-800
| -67% | -$28.7K |
|
8064
El Pollo Loco
LOCO
$503M
| $12K | ﹤0.01% |
+1,396
| New | +$13.1K |
|
8065
CALL
ManpowerGroup
MAN
$2.6B
| $12K | ﹤0.01% |
+200
| New | +$15K |
|
8066
Martin Midstream Partners
MMLP
$93.5M
| $12K | ﹤0.01% |
3,777
+1,644
| +77% | +$6.52K |
|
8067
PUT
Nerdy
NRDY
$108M
| $12K | ﹤0.01% |
5,700
+5,200
| +1,040% | +$13.9K |
|
|
NVEE
8068
PUT
DELISTED
NV5 Global
NVEE
| $12K | ﹤0.01% |
+400
| New | +$13.1K |
|
8069
PUT
Northwest Bancshares
NWBI
$2.33B
| $12K | ﹤0.01% |
900
+300
| +50% | +$4.17K |
|
8070
PUT
News Corp Class B
NWS
$17.7B
| $12K | ﹤0.01% |
800
-10,400
| -93% | -$177K |
|
8071
ProShares K-1 Free Crude Oil Strategy ETF
OILK
$210M
| $12K | ﹤0.01% |
306
-923
| -75% | -$43.9K |
|
8072
CALL
Outset Medical
OM
$86.4M
| $12K | ﹤0.01% |
53
+20
| +61% | +$5.36K |
|
8073
PUT
OneWater Marine
ONEW
$211M
| $12K | ﹤0.01% |
400
| – | – |
|
8074
CALL
Pegasystems
PEGA
$5.09B
| $12K | ﹤0.01% |
800
-1,200
| -60% | -$24.4K |
|
|
PPBT
8075
Purple Biotech
PPBT
$1.29M
| $12K | ﹤0.01% |
30
+18
| +150% | +$8.41K |
|
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.