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 |
Amazon
AMZN
|
+$170M |
| 2 |
Invesco QQQ Trust
QQQ
|
+$71.3M |
| 3 |
AT&T
T
|
+$44.2M |
| 4 |
Meta Platforms (Facebook)
META
|
+$37.1M |
| 5 |
iShares MSCI Emerging Markets ETF
EEM
|
+$34.4M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
Microsoft
MSFT
|
+$94.3M |
| 2 |
JPMorgan Chase
JPM
|
+$68.2M |
| 3 |
Citigroup
C
|
+$62.8M |
| 4 |
Berkshire Hathaway Class B
BRK.B
|
+$50.9M |
| 5 |
SPDR Gold Trust
GLD
|
+$46.3M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Consumer Discretionary | 0.38% |
| 2 | Technology | 0.35% |
| 3 | Communication Services | 0.24% |
| 4 | Healthcare | 0.2% |
| 5 | Consumer Staples | 0.13% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
2476
Vipshop
VIPS
$6.84B
| $987K | ﹤0.01% |
+72,390
| New | +$719K |
|
2477
United States Gasoline Fund
UGA
$142M
| $986K | ﹤0.01% |
+16,460
| New | +$948K |
|
|
NMTR
2478
CALL
DELISTED
9 Meters Biopharma
NMTR
| $985K | ﹤0.01% |
781,800
+742,895
| +1,910% | +$1.69M |
|
2479
CALL
Toyota
TM
$210B
| $983K | ﹤0.01% |
7,200
-81,000
| -92% | -$11.3M |
|
2480
uniQure
QURE
$2.68B
| $982K | ﹤0.01% |
43,355
+14,318
| +49% | +$309K |
|
2481
CALL
Martin Marietta Materials
MLM
$33.6B
| $980K | ﹤0.01% |
2,900
-4,700
| -62% | -$1.6M |
|
2482
Mattel
MAT
$4.17B
| $979K | ﹤0.01% |
54,927
+33,427
| +155% | +$606K |
|
2483
CALL
Vroom Inc
VRM
$36.9M
| $979K | ﹤0.01% |
12,006
+1,050
| +10% | +$90.2K |
|
|
GLOP
2484
DELISTED
GASLOG PARTNERS LP
GLOP
| $976K | ﹤0.01% |
146,652
+68,748
| +88% | +$505K |
|
|
BRSL
2485
Brightstar Lottery PLC
BRSL
$1.91B
| $975K | ﹤0.01% |
42,997
+27,871
| +184% | +$604K |
|
|
RCM
2486
DELISTED
R1 RCM Inc. Common Stock
RCM
| $975K | ﹤0.01% |
89,068
+35,203
| +65% | +$447K |
|
|
CANO
2487
CALL
DELISTED
Cano Health, Inc.
CANO
| $975K | ﹤0.01% |
7,122
+861
| +14% | +$291K |
|
|
LAZR
2488
PUT
DELISTED
Luminar Technologies
LAZR
| $974K | ﹤0.01% |
13,120
-6,187
| -32% | -$674K |
|
2489
PUT
PubMatic
PUBM
$581M
| $972K | ﹤0.01% |
75,900
+6,400
| +9% | +$100K |
|
2490
PUT
Similarweb
SMWB
$551M
| $972K | ﹤0.01% |
151,300
-1,700
| -1% | -$9.74K |
|
2491
CALL
Global X S&P 500 Tail Risk ETF
XTR
$4.77M
| $972K | ﹤0.01% |
40,700
+40,500
| +20,250% | +$936K |
|
2492
Vistra
VST
$55.1B
| $970K | ﹤0.01% |
+41,816
| New | +$968K |
|
2493
Penumbra
PEN
$12.5B
| $969K | ﹤0.01% |
4,359
+1,708
| +64% | +$334K |
|
|
ERF
2494
CALL
DELISTED
Enerplus Corporation
ERF
| $968K | ﹤0.01% |
54,900
-25,300
| -32% | -$434K |
|
|
LHCG
2495
DELISTED
LHC Group LLC
LHCG
| $968K | ﹤0.01% |
5,990
+5,658
| +1,704% | +$934K |
|
2496
CALL
Axalta
AXTA
$7.01B
| $967K | ﹤0.01% |
38,000
-71,200
| -65% | -$1.76M |
|
2497
Jabil
JBL
$32.8B
| $966K | ﹤0.01% |
+14,166
| New | +$936K |
|
2498
PUT
Magnolia Oil & Gas
MGY
$5.83B
| $966K | ﹤0.01% |
41,200
-17,100
| -29% | -$417K |
|
2499
CALL
Playtika
PLTK
$1.4B
| $966K | ﹤0.01% |
113,600
-10,200
| -8% | -$94.5K |
|
2500
PUT
Range Resources
RRC
$9.11B
| $965K | ﹤0.01% |
38,600
-58,900
| -60% | -$1.61M |
|
Similar funds
Simplex Trading's Q4 2022 Portfolio in Review
As of Q4 2022, Simplex Trading held 11,206 positions worth $91.9B, up 3.9% from $88.5B the previous quarter. Its ten largest holdings account for 34% of the portfolio.
Simplex Trading's Q4 2022 filing shows 1,219 new, 3,365 increased, 4,370 reduced and 1,942 closed positions. Its largest new stake was iShares MSCI Emerging Markets ETF: 932,756 shares worth $35.4M. The largest sale was Microsoft, an estimated $94.3M.
By sector, the portfolio is most concentrated in Consumer Discretionary at 0.38% of assets, up from 0.3% a quarter earlier, followed by Technology and Communication Services.
- Simplex Trading's largest Q4 2022 buy was iShares MSCI Emerging Markets ETF: 932,756 shares worth $35.4M.
- Simplex Trading added most to Amazon in Q4 2022, an estimated $170M increase.
- Simplex Trading's biggest Q4 2022 reduction was Microsoft, cutting an estimated $94.3M.
- Simplex Trading fully exited JPMorgan Chase in Q4 2022, selling an estimated $68.2M.
- Simplex Trading's ten largest holdings make up 34% of its $91.9B portfolio in Q4 2022.
- Simplex Trading opened 1,219 new positions and closed 1,942 in Q4 2022.
- Simplex Trading's portfolio value rose 3.9% quarter-over-quarter to $91.9B.
Based on Simplex Trading's 13F filing for Q4 2022, filed 2 Feb 2023.