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 |
Apple
AAPL
|
+$179M |
| 2 |
iShares 20+ Year Treasury Bond ETF
TLT
|
+$90.1M |
| 3 |
State Street SPDR S&P 500 ETF Trust
SPY
|
+$56M |
| 4 |
iShares Silver Trust
SLV
|
+$41.7M |
| 5 |
Advanced Micro Devices
AMD
|
+$39.8M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
State Street Financial Select Sector SPDR ETF
XLF
|
+$42.8M |
| 2 |
Verizon
VZ
|
+$42.5M |
| 3 |
Occidental Petroleum
OXY
|
+$34.7M |
| 4 |
iShares China Large-Cap ETF
FXI
|
+$33M |
| 5 |
Direxion Daily S&P 500 Bull 3x ETF
SPXL
|
+$32.7M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Technology | 0.67% |
| 2 | Consumer Discretionary | 0.37% |
| 3 | Industrials | 0.24% |
| 4 | Healthcare | 0.22% |
| 5 | Financials | 0.19% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
3426
CALL
Liberty Global Class C
LBTYK
$3.27B
| $679K | ﹤0.01% |
26,600
+20,200
| +316% | +$540K |
|
|
NARI
3427
PUT
DELISTED
Inari Medical, Inc. Common Stock
NARI
| $679K | ﹤0.01% |
7,500
+7,300
| +3,650% | +$598K |
|
3428
CALL
Viasat
VSAT
$10.2B
| $678K | ﹤0.01% |
13,900
+10,600
| +321% | +$488K |
|
|
ONEM
3429
DELISTED
1Life Healthcare
ONEM
| $678K | ﹤0.01% |
61,249
+31,629
| +107% | +$354K |
|
3430
PUT
Acacia Research
ACTG
$447M
| $677K | ﹤0.01% |
150,300
-245,600
| -62% | -$1.03M |
|
3431
Global X MSCI China Consumer Discretionary ETF
CHIQ
$126M
| $677K | ﹤0.01% |
34,197
+32,742
| +2,250% | +$746K |
|
3432
Andersons Inc
ANDE
$2.54B
| $676K | ﹤0.01% |
13,456
+12,977
| +2,709% | +$546K |
|
3433
PUT
Stride
LRN
$3.83B
| $675K | ﹤0.01% |
18,600
+5,000
| +37% | +$166K |
|
3434
CALL
Designer Brands
DBI
$298M
| $674K | ﹤0.01% |
49,900
-4,500
| -8% | -$59.5K |
|
3435
CALL
FLEX LNG
FLNG
$1.65B
| $673K | ﹤0.01% |
+23,600
| New | +$527K |
|
|
SJT
3436
San Juan Basin Royalty Trust
SJT
$118M
| $673K | ﹤0.01% |
76,838
+70,650
| +1,142% | +$494K |
|
3437
Kulicke & Soffa
KLIC
$5.14B
| $671K | ﹤0.01% |
11,985
-26,360
| -69% | -$1.46M |
|
3438
PUT
CAE Inc. Common Shares
CAE
$8.3B
| $670K | ﹤0.01% |
25,700
+23,700
| +1,185% | +$603K |
|
3439
CALL
Lear
LEA
$7.26B
| $670K | ﹤0.01% |
4,700
-1,600
| -25% | -$260K |
|
3440
Invesco DB US Dollar Index Bearish Fund
UDN
$107M
| $670K | ﹤0.01% |
34,147
-5,929
| -15% | -$118K |
|
3441
PUT
10x Genomics
TXG
$5.83B
| $669K | ﹤0.01% |
+8,800
| New | +$770K |
|
3442
PUT
Veracyte
VCYT
$4.44B
| $669K | ﹤0.01% |
24,300
+10,700
| +79% | +$306K |
|
3443
PUT
Cactus
WHD
$3.74B
| $669K | ﹤0.01% |
+11,800
| New | +$585K |
|
3444
CALL
Beam Global
BEEM
$23.3M
| $668K | ﹤0.01% |
32,700
+22,600
| +224% | +$330K |
|
3445
CALL
Sweetgreen
SG
$733M
| $668K | ﹤0.01% |
20,900
+17,700
| +553% | +$514K |
|
|
UNIT
3446
PUT
Uniti Group
UNIT
$2.62B
| $668K | ﹤0.01% |
48,600
+15,700
| +48% | +$199K |
|
|
WWE
3447
CALL
DELISTED
World Wrestling Entertainment
WWE
| $668K | ﹤0.01% |
10,700
-33,000
| -76% | -$1.82M |
|
3448
PUT
Genuine Parts
GPC
$17.6B
| $667K | ﹤0.01% |
5,300
+3,000
| +130% | +$388K |
|
3449
PUT
Inspire Medical Systems
INSP
$1.47B
| $667K | ﹤0.01% |
2,600
+2,100
| +420% | +$480K |
|
|
PSTH
3450
DELISTED
Pershing Square Tontine Holdings, Ltd.
PSTH
| $666K | ﹤0.01% |
33,503
-77,789
| -70% | -$1.54M |
|
Similar funds
Simplex Trading's Q1 2022 Portfolio in Review
As of Q1 2022, Simplex Trading held 12,038 positions worth $109B, up 10% from $99B the previous quarter. Its ten largest holdings account for 37% of the portfolio.
Simplex Trading deployed $17.5B of net new capital in Q1 2022, opening 1,603 new positions and adding to 4,441 existing holdings. Its largest new stake was iShares 20+ Year Treasury Bond ETF: 652,921 shares worth $86.2M.
By sector, the portfolio is most concentrated in Technology at 0.67% of assets, up from 0.61% a quarter earlier, followed by Consumer Discretionary and Industrials.
On the sell side, the largest reduction was Verizon, an estimated $42.5M trimmed.
- Simplex Trading's largest Q1 2022 buy was iShares 20+ Year Treasury Bond ETF: 652,921 shares worth $86.2M.
- Simplex Trading added most to Apple in Q1 2022, an estimated $179M increase.
- Simplex Trading's biggest Q1 2022 reduction was Verizon, cutting an estimated $42.5M.
- Simplex Trading fully exited State Street Financial Select Sector SPDR ETF in Q1 2022, selling an estimated $42.8M.
- Simplex Trading's ten largest holdings make up 37% of its $109B portfolio in Q1 2022.
- Simplex Trading opened 1,603 new positions and closed 1,637 in Q1 2022.
- Simplex Trading's portfolio value rose 10% quarter-over-quarter to $109B.
Based on Simplex Trading's 13F filing for Q1 2022, filed 2 May 2022.