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 |
Alphabet (Google) Class C
GOOG
|
+$54.6M |
| 2 |
Apple
AAPL
|
+$29.1M |
| 3 |
Meta Platforms (Facebook)
META
|
+$15.7M |
| 4 |
IBM
IBM
|
+$13.8M |
| 5 |
Baidu
BIDU
|
+$10.6M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
State Street SPDR S&P 500 ETF Trust
SPY
|
+$10.1M |
| 2 |
McDonald's
MCD
|
+$8.46M |
| 3 |
Ralph Lauren
RL
|
+$5.36M |
| 4 |
Intel
INTC
|
+$5.04M |
| 5 |
WBA
Walgreens Boots Alliance
WBA
|
+$4.76M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Communication Services | 14.27% |
| 2 | Technology | 10.3% |
| 3 | Healthcare | 7.76% |
| 4 | Consumer Discretionary | 6.32% |
| 5 | Financials | 5.18% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
|
ETP
451
DELISTED
Energy Transfer Partners L.p.
ETP
| $424K | 0.04% |
8,130
+3,507
| +76% | +$196K |
|
452
Northrop Grumman
NOC
$74.6B
| $421K | 0.04% |
2,655
-3,221
| -55% | -$516K |
|
|
MNDT
453
CALL
DELISTED
Mandiant, Inc. Common Stock
MNDT
| $421K | 0.04% |
1,177
-226
| -16% | -$10.2K |
|
454
Best Buy
BBY
$18.4B
| $419K | 0.04% |
12,874
+1,497
| +13% | +$53.1K |
|
|
TTPH
455
DELISTED
Tetraphase Pharmaceuticals, Inc.
TTPH
| $416K | 0.03% |
438
+211
| +93% | +$173K |
|
456
NOV
NOV
$7.3B
| $415K | 0.03% |
8,611
-22,640
| -72% | -$1.16M |
|
457
CALL
Philip Morris
PM
$303B
| $414K | 0.03% |
1,266
+429
| +51% | +$35.3K |
|
458
Alcoa
AA
$12.2B
| $413K | 0.03% |
15,440
+8,323
| +117% | +$258K |
|
459
Invesco CurrencyShares Japanese Yen Trust
FXY
$425M
| $412K | 0.03% |
5,200
-1,847
| -26% | -$148K |
|
460
Eli Lilly
LLY
$1.04T
| $412K | 0.03% |
+4,940
| New | +$376K |
|
|
GRFS
461
Grifois
GRFS
$5.36B
| $411K | 0.03% |
26,550
+25,788
| +3,384% | +$418K |
|
462
CALL
Capital One
COF
$124B
| $409K | 0.03% |
550
+242
| +79% | +$20.3K |
|
463
Transocean
RIG
$5.87B
| $409K | 0.03% |
25,400
+15,947
| +169% | +$287K |
|
464
CALL
Wells Fargo
WFC
$262B
| $409K | 0.03% |
1,662
+931
| +127% | +$51.9K |
|
465
Bristol-Myers Squibb
BMY
$124B
| $408K | 0.03% |
6,139
-1,966
| -24% | -$130K |
|
466
CALL
Elevance Health
ELV
$84.4B
| $406K | 0.03% |
538
+255
| +90% | +$40.7K |
|
467
Direxion Daily Energy Bull 2X ETF
ERX
$245M
| $404K | 0.03% |
807
+284
| +54% | +$167K |
|
468
CALL
LyondellBasell Industries
LYB
$20.1B
| $402K | 0.03% |
406
-133
| -25% | -$13.4K |
|
|
BPT
469
DELISTED
BP Prudhoe Bay Royalty Trust
BPT
| $401K | 0.03% |
6,501
+6,445
| +11,509% | +$427K |
|
470
PUT
AbbVie
ABBV
$448B
| $400K | 0.03% |
2,949
+1,077
| +58% | +$70.3K |
|
471
Protolabs
PRLB
$1.9B
| $396K | 0.03% |
5,873
+4,599
| +361% | +$325K |
|
472
KKR & Co
KKR
$85.8B
| $394K | 0.03% |
17,244
-5,893
| -25% | -$135K |
|
|
473
PUT
McDonald's
MCD
$187B
| $394K | 0.03% |
943
-1,252
| -57% | -$121K |
|
|
JOY
474
DELISTED
Joy Global Inc
JOY
| $394K | 0.03% |
10,901
-21,449
| -66% | -$863K |
|
475
Vanguard FTSE Emerging Markets ETF
VWO
$121B
| $393K | 0.03% |
9,633
-3,233
| -25% | -$139K |
|
Similar funds
Simplex Trading's Q2 2015 Portfolio in Review
As of Q2 2015, Simplex Trading held 6,639 positions worth $1.19B, up 39% from $860M the previous quarter. Its ten largest holdings account for 20% of the portfolio.
Simplex Trading deployed $279M of net new capital in Q2 2015, opening 1,607 new positions and adding to 1,829 existing holdings. Its largest new stake was IBM: 85,948 shares worth $13.4M.
By sector, the portfolio is most concentrated in Communication Services at 14% of assets, up from 7.8% a quarter earlier, followed by Technology and Healthcare.
On the sell side, the largest reduction was Intel, an estimated $5.04M trimmed.
- Simplex Trading's largest Q2 2015 buy was IBM: 85,948 shares worth $13.4M.
- Simplex Trading added most to Alphabet (Google) Class C in Q2 2015, an estimated $54.6M increase.
- Simplex Trading's biggest Q2 2015 reduction was Intel, cutting an estimated $5.04M.
- Simplex Trading fully exited State Street SPDR S&P 500 ETF Trust in Q2 2015, selling an estimated $10.1M.
- Simplex Trading's ten largest holdings make up 20% of its $1.19B portfolio in Q2 2015.
- Simplex Trading opened 1,607 new positions and closed 1,438 in Q2 2015.
- Simplex Trading's portfolio value rose 39% quarter-over-quarter to $1.19B.
Based on Simplex Trading's 13F filing for Q2 2015, filed 8 Jul 2015.