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 | |
|---|---|---|---|---|---|---|
|
HIMX
2526
PUT
Himax Technologies
HIMX
$2.2B
| $940K | ﹤0.01% |
151,500
+3,500
| +2% | +$22.3K |
|
|
BLUE
2527
DELISTED
bluebird bio
BLUE
| $939K | ﹤0.01% |
6,785
-1,237
| -15% | -$174K |
|
2528
Chegg
CHGG
$108M
| $939K | ﹤0.01% |
37,172
+1,331
| +4% | +$33.8K |
|
2529
TC Energy
TRP
$73.5B
| $938K | ﹤0.01% |
+23,554
| New | +$1.02M |
|
2530
CALL
LSB Industries
LXU
$881M
| $937K | ﹤0.01% |
70,500
-10,900
| -13% | -$163K |
|
2531
CALL
UiPath
PATH
$5.62B
| $936K | ﹤0.01% |
73,700
-62,400
| -46% | -$771K |
|
2532
CALL
Samsara
IOT
$19.3B
| $934K | ﹤0.01% |
75,200
-60,700
| -45% | -$691K |
|
|
TRUE
2533
PUT
DELISTED
TrueCar
TRUE
| $934K | ﹤0.01% |
372,500
+370,000
| +14,800% | +$770K |
|
|
TGNA
2534
PUT
DELISTED
TEGNA Inc
TGNA
| $932K | ﹤0.01% |
44,000
+32,000
| +267% | +$645K |
|
2535
Global X Uranium ETF
URA
$5.52B
| $932K | ﹤0.01% |
46,454
-46,570
| -50% | -$942K |
|
2536
PUT
RCI Hospitality Holdings
RICK
$199M
| $931K | ﹤0.01% |
10,000
+300
| +3% | +$25K |
|
|
AGEN
2537
CALL
Agenus
AGEN
$249M
| $930K | ﹤0.01% |
19,764
-1,747
| -8% | -$88.8K |
|
2538
Service Corp International
SCI
$11.4B
| $930K | ﹤0.01% |
+13,451
| New | +$896K |
|
2539
CALL
Vista Energy
VIST
$7.75B
| $928K | ﹤0.01% |
59,300
-91,400
| -61% | -$1.2M |
|
2540
PUT
Wabtec
WAB
$51.1B
| $928K | ﹤0.01% |
9,300
+4,500
| +94% | +$430K |
|
2541
CALL
B&G Foods
BGS
$285M
| $922K | ﹤0.01% |
82,700
-18,100
| -18% | -$252K |
|
2542
CALL
National Grid
NGG
$82.7B
| $922K | ﹤0.01% |
16,236
-10,202
| -39% | -$545K |
|
2543
CALL
Qfin Holdings
QFIN
$1.61B
| $918K | ﹤0.01% |
45,100
+16,600
| +58% | +$246K |
|
2544
PUT
Fidelity National Financial
FNF
$13.9B
| $917K | ﹤0.01% |
25,000
+15,952
| +176% | +$599K |
|
2545
CALL
Leidos
LDOS
$14.1B
| $915K | ﹤0.01% |
8,700
+3,700
| +74% | +$379K |
|
2546
CALL
Republic Services
RSG
$66.7B
| $915K | ﹤0.01% |
7,100
-3,100
| -30% | -$414K |
|
2547
PUT
Shoals Technologies Group
SHLS
$1.58B
| $915K | ﹤0.01% |
37,100
-33,600
| -48% | -$811K |
|
2548
PUT
Celldex Therapeutics
CLDX
$2.77B
| $913K | ﹤0.01% |
20,500
+9,200
| +81% | +$328K |
|
2549
Aecom
ACM
$9.07B
| $912K | ﹤0.01% |
+10,748
| New | +$845K |
|
2550
CALL
Centrus Energy
LEU
$3.22B
| $912K | ﹤0.01% |
28,100
+19,700
| +235% | +$751K |
|
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.